131-661: Interstate 69 ( I-69 ) is an Interstate Highway in the United States currently consisting of eight unconnected segments. The longest segment runs from Evansville, Indiana , northeast to the Canadian border in Port Huron, Michigan , and includes the original continuous segment from Indianapolis, Indiana , to Port Huron of 355.8 miles (572.6 km). The remaining separated segments are variously completed and posted or not posted sections of an extension southwest to
262-535: A concurrency or overlap. For example, I‑75 and I‑85 share the same roadway in Atlanta ; this 7.4-mile (11.9 km) section, called the Downtown Connector , is labeled both I‑75 and I‑85. Concurrencies between Interstate and US Highway numbers are also allowed in accordance with AASHTO policy, as long as the length of the concurrency is reasonable. In rare instances, two highway designations sharing
393-541: A concurrency . Shortly thereafter, it meets I-64 at a cloverleaf interchange . From there, it runs north to SR 68 . Construction was completed on November 19, 2012, on a 67-mile (108 km) segment (SIU 3, Sections 1–3). This extension takes the route north-northeast from there to SR 64 near Oakland City , then north-northeast to US 50 / US 150 at Washington , and finally northeast to US 231 near Naval Surface Warfare Center Crane Division (NSWC Crane Division). Construction for
524-552: A toll road but quickly reverted to making it toll-free in 2006 with an announcement to that effect by Indiana Governor Mitch Daniels after widespread opposition from I-69 opponents and supporters alike. Indiana had been using funds from the $ 3.8-billion Indiana Toll Road lease deal along with public–private partnerships to construct SIU 3 between Indianapolis and Evansville. The segment from Indianapolis to Evansville, Indiana , opened as of August 10, 2024. As of 2015, SIU 1 (all of original I-69 north of Indianapolis, plus
655-651: A 28-year-old brevet lieutenant colonel, accompanied the trip "through darkest America with truck and tank," as he later described it. Some roads in the West were a "succession of dust, ruts, pits, and holes." As the landmark 1916 law expired, new legislation was passed—the Federal Aid Highway Act of 1921 (Phipps Act). This new road construction initiative once again provided for federal matching funds for road construction and improvement, $ 75 million allocated annually. Moreover, this new legislation for
786-561: A bill that would authorize the re-tolling of three parkways slated to become part of I-69. The construction of the I-69 extension beyond Indianapolis has angered environmentalists. In particular, the southern portion of the route in Indiana would run through wetlands, existing farmland, and forested areas, and cut through geologically sensitive karst topography, which environmentalists argue threatens to pollute underground water systems and harm
917-476: A change in the numbering system as a result of a new policy adopted in 1973. Previously, letter-suffixed numbers were used for long spurs off primary routes; for example, western I‑84 was I‑80N, as it went north from I‑80 . The new policy stated, "No new divided numbers (such as I-35W and I-35E , etc.) shall be adopted." The new policy also recommended that existing divided numbers be eliminated as quickly as possible; however, an I-35W and I-35E still exist in
1048-458: A combined $ 17 million (equivalent to $ 21.2 million in 2023) for an environmental and design study to determine how the two states will pay for it. The first study was commissioned in 2001, and a preliminary report in 2004 put the cost of a bridge at $ 1.4 billion (equivalent to $ 2.16 billion in 2023). In August 2023, officials in Kentucky and Indiana submitted a grant proposal to
1179-779: A junction with I-94 just outside Port Huron. At its eastern terminus, I-69 joins I-94 to the Blue Water Bridge across the St. Clair River , where traffic continues on Highway 402 in the Canadian province of Ontario to London, Ontario . The new section of I-69 in southern Indiana presently begins at the US ;41 interchange south of Evansville at the former southern terminus of I-164 . From there, it runs first east, then north, meeting SR 662 , SR 66 , and SR 62 . At exit 18, SR 57 joins I-69 on
1310-947: A lack of funding to build the highway outside of the Memphis metropolitan area. Arkansas has halted work on its mainline portion of I-69, aside from the Monticello Bypass, although it has applied for a federal grant to complete design and construction for the 25-mile (40 km) section between Monticello and McGehee . Phase 1 started construction in December 2022. As of 2023, no portion of I-69 in Louisiana has been built nor has any construction started. Texas, Kentucky, and Indiana have been slowly advancing construction of I-69 within each state through traditional funding sources when available and innovative financing methods, such as public–private partnerships . In December 2018,
1441-595: A national road grid with the passage of the Federal Aid Highway Act of 1921 . In 1926, the United States Numbered Highway System was established, creating the first national road numbering system for cross-country travel. The roads were state-funded and maintained, and there were few national standards for road design. United States Numbered Highways ranged from two-lane country roads to multi-lane freeways. After Dwight D. Eisenhower became president in 1953, his administration developed
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#17327653684741572-541: A northeasterly direction, passing through the Lansing–East Lansing metropolitan area . Here, I-69 is cosigned with I-96 as an overlap west of Lansing , the only such palindromic pairing in the Interstate Highway System . Where it splits from I-96, I-69 turns east, both in compass direction and in signed direction, and heads north of Lansing and through Flint (where it crosses I-75 ) to
1703-589: A numbering scheme in which primary Interstates are assigned one- or two-digit numbers, and shorter routes which branch off of longer ones are assigned three-digit numbers where the last two digits match the parent route. The Interstate Highway System is partially financed through the Highway Trust Fund , which itself is funded by a combination of a federal fuel tax and transfers from the Treasury's general fund. Though federal legislation initially banned
1834-462: A partial interchange with the current route of MS 304, then runs easterly to an interchange with I-55 in northern Hernando . It then continues north, overlapping I-55 to the Tennessee state line, and continues northward concurrently with I-55 to the south side of Memphis. It then follows I-240 northward through downtown before joining I-40. Presently, the northern end of this section of I-69
1965-464: A project known as I-69 Finish Line, with completion anticipated by the end of 2024. SIU 2 will follow the southeastern quarter of I-465 around the city. The interchange between I-69 and I-465 on the southwest side of Indianapolis opened on August 6 and 9, 2024, making I-69 through Indiana continuous. A route from I-465 in Indianapolis northeast via Fort Wayne to I-80/I-90 near Angola
2096-491: A proposal for an interstate highway system, eventually resulting in the enactment of the Federal-Aid Highway Act of 1956 . Unlike the earlier United States Numbered Highway System, the interstates were designed to be all freeways, with nationally unified standards for construction and signage. While some older freeways were adopted into the system, most of the routes were completely new. In dense urban areas,
2227-529: A proposed crosscountry extension of I-69: Corridor 18 was extended southwest to Houston, where it connected to Corridor 20, by the Department of Transportation and Related Agencies Appropriations Act, 1993; the new definition read "Corridor from Indianapolis, Indiana, through Evansville, Indiana, Memphis, Tennessee, Shreveport / Bossier, Louisiana , and to Houston, Texas." The National Highway System Designation Act of 1995 made further amendments to
2358-559: A report called Toll Roads and Free Roads , "the first formal description of what became the Interstate Highway System" and, in 1944, the similarly themed Interregional Highways . The Interstate Highway System gained a champion in President Dwight D. Eisenhower, who was influenced by his experiences as a young Army officer crossing the country in the 1919 Motor Transport Corps convoy that drove in part on
2489-409: A single digit prefixed to the two-digit number of its parent Interstate Highway. Spur routes deviate from their parent and do not return; these are given an odd first digit. Circumferential and radial loop routes return to the parent, and are given an even first digit. Unlike primary Interstates, three-digit Interstates are signed as either east–west or north–south, depending on the general orientation of
2620-801: A speed limit of 45 mph (70 km/h) because it is a parkway that consists of only one lane per side of the highway. On the other hand, Interstates 15, 80, 84, and 215 in Utah have speed limits as high as 70 mph (115 km/h) within the Wasatch Front , Cedar City , and St. George areas, and I-25 in New Mexico within the Santa Fe and Las Vegas areas along with I-20 in Texas along Odessa and Midland and I-29 in North Dakota along
2751-460: A speed limit of 80 mph (130 km/h). Other Interstates in Idaho, Montana, Oklahoma, South Dakota and Wyoming also have the same high speed limits. In some areas, speed limits on Interstates can be significantly lower in areas where they traverse significantly hazardous areas. The maximum speed limit on I-90 is 50 mph (80 km/h) in downtown Cleveland because of two sharp curves with
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#17327653684742882-559: A split in southern Texas ( I-69E , I-69C , I-69W ) to serve three border crossings at Brownsville, Pharr, and Laredo. In August 2007, I-69 was selected by the United States Department of Transportation (USDOT) as one of six Corridors of the Future, making it eligible for additional federal funding and streamlined planning and review. This funding has since been withheld, causing some states to suspend completion of
3013-474: A suggested limit of 35 mph (55 km/h) in a heavily congested area; I-70 through Wheeling, West Virginia , has a maximum speed limit of 45 mph (70 km/h) through the Wheeling Tunnel and most of downtown Wheeling; and I-68 has a maximum speed limit of 40 mph (65 km/h) through Cumberland, Maryland , because of multiple hazards including sharp curves and narrow lanes through
3144-563: Is a civil township of Branch County in the U.S. state of Michigan . As of the 2020 census , the township population was 1,427. There are no incorporated municipalities within the primarily agricultural township. There are settlements in three communities : There are several lakes in the township. Those in the west drain into the Prairie River , while those in the south drain into the Fawn River . Coldwater Lake, located in
3275-543: Is also commonly believed the Interstate Highway System was built for the sole purpose of evacuating cities in the event of nuclear warfare . While military motivations were present, the primary motivations were civilian. The numbering scheme for the Interstate Highway System was developed in 1957 by the American Association of State Highway and Transportation Officials (AASHTO). The association's present numbering policy dates back to August 10, 1973. Within
3406-480: Is an extension of I-530 from Pine Bluff south along the US 425 corridor to I-69 west of Monticello ; a short piece at the south end opened in mid-2006 as Highway 530 (AR 530). Another segment of AR 530 opened in 2013 and another in 2015. The only section of Future I-69 that is currently open to traffic is the 8.5-mile (13.7 km) eastern leg of the Monticello Bypass. This section of
3537-556: Is at the I-40/I-69/SR ;300 interchange on the north side of Memphis. This portion of the route was the first SIU of the proposed extension to be signed as part of the national I-69 route, and the first portion designed as part of the extension. On June 6, 2008, President George W. Bush signed HR 1195, designating the Purchase Parkway as Future I-69. Kentucky officials planned to place I-69 signs on
3668-606: Is proposed as well. After that, Tennessee–Missouri–Arkansas I-55 link to I-155 which crosses back across the Mississippi River to the newly completed I-69 will serve as the main freeway routes between Memphis and northwestern Tennessee, at least on an interim basis. In Kentucky, I-69 mostly follows existing freeways originally built as toll roads . SIU 6 follows the Julian M. Carroll Purchase Parkway and I-24 from Fulton to Eddyville , while SIU 5 continues along
3799-539: Is to have the highway route extend from Tamaulipas , Mexico to Ontario , Canada. The planned I-11 will then bridge the Interstate gap between Phoenix, Arizona and Las Vegas, Nevada , and thus form part of the CANAMEX Corridor (along with I-19 , and portions of I-10 and I-15 ) between Sonora , Mexico and Alberta , Canada. Political opposition from residents canceled many freeway projects around
3930-423: Is unclear if the entire I-69 project in Tennessee will ever be completed. The state has suspended work indefinitely on the 65-mile (105 km) SIU 8 and the remaining nine-mile (14 km) unbuilt portion of SIU 9 between SR 300 and the northern end of I-269 near Millington due to a lack of federal funding. Work on SIU 7 was also suspended for a few years, but this project has now been revived by
4061-474: The Dallas–Fort Worth metroplex in Texas, and an I-35W and I-35E that run through Minneapolis and Saint Paul , Minnesota, still exist. Additionally, due to Congressional requirements, three sections of I-69 in southern Texas will be divided into I-69W , I-69E , and I-69C (for Central). AASHTO policy allows dual numbering to provide continuity between major control points. This is referred to as
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4192-552: The Federal Aid Highway Act of 1956 into law. Under the act, the federal government would pay for 90 percent of the cost of construction of Interstate Highways. Each Interstate Highway was required to be a freeway with at least four lanes and no at-grade crossings. The publication in 1955 of the General Location of National System of Interstate Highways , informally known as the Yellow Book , mapped out what became
4323-630: The Grand Forks area have higher speed limits of 75 mph (120 km/h). As one of the components of the National Highway System , Interstate Highways improve the mobility of military troops to and from airports, seaports, rail terminals, and other military bases. Interstate Highways also connect to other roads that are a part of the Strategic Highway Network , a system of roads identified as critical to
4454-552: The I-469 loop around Fort Wayne) and SIU 2 were open, as was SIU 5 in Kentucky, part of SIU 9 in the Memphis, Tennessee , area, and the short SIU 10 in northwestern Mississippi. SIU 6 in Kentucky was built as a freeway but was not yet up to Interstate standards in all areas. At around the same time, Texas was actively pursuing completing its portion of I-69 by upgrading existing U.S. Routes and state highways along
4585-740: The Interstate Highway System , or the Eisenhower Interstate System , is a network of controlled-access highways that forms part of the National Highway System in the United States . The system extends throughout the contiguous United States and has routes in Hawaii , Alaska , and Puerto Rico . In the 20th century, the United States Congress began funding roadways through the Federal Aid Road Act of 1916 , and started an effort to construct
4716-529: The Lincoln Highway , the first road across America. He recalled that, "The old convoy had started me thinking about good two-lane highways... the wisdom of broader ribbons across our land." Eisenhower also gained an appreciation of the Reichsautobahn system, the first "national" implementation of modern Germany's Autobahn network, as a necessary component of a national defense system while he
4847-589: The Lower Rio Grande Valley . The I-69/TTC project has been split into 15 SIUs, which match the original ones but do not share numbers. SIUs 1 to 8 (original 16 to 23) cover the mainline along the "Interstate 69 East" branch to the Mexican border at Brownsville. The "Interstate 69 Central" branch to Pharr is SIUs 9, 11, and 12 (original 24 to 26). The "Interstate 369" and "Interstate 69 West" branches to Texarkana and
4978-755: The Mexican border in Texas . Of this extension—nicknamed the NAFTA Superhighway because it would help trade with Canada and Mexico spurred by the North American Free Trade Agreement (NAFTA)—seven pieces in Laredo, Texas ; Pharr, Texas ; Brownsville, Texas ; Corpus Christi, Texas ; Houston, Texas ; northwestern Mississippi ; and Memphis, Tennessee , have been built or upgraded and signposted as I-69. Indiana completed
5109-556: The Pennyrile Parkway , Western Kentucky Parkway , and Purchase Parkway in 2008, but the Federal Highway Administration (FHWA) had not yet given Kentucky approval to do so for the entire route. Kentucky was making spot improvements to its parkways to bring them up to Interstate Highway standards in anticipation of the I-69 designation. Meanwhile, Indiana examined building most of SIU 3 as
5240-634: The Trans-Texas Corridor (TTC) studies. This part of the TTC, called I-69/TTC, includes I-69 and all of its spurs authorized by Congress. It will extend from three border crossings, at Laredo , Pharr , and Brownsville , along US 59 , US 281 , and US 77 toward Victoria . After the three branches join, I-69 will continue along the general US 59 corridor through Houston to Tenaha , where it will turn easterly to Louisiana along US 84 . In Greater Houston , I-69 will follow
5371-506: The US Department of Defense . The system has also been used to facilitate evacuations in the face of hurricanes and other natural disasters. An option for maximizing traffic throughput on a highway is to reverse the flow of traffic on one side of a divider so that all lanes become outbound lanes. This procedure, known as contraflow lane reversal , has been employed several times for hurricane evacuations. After public outcry regarding
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5502-470: The US Highways , which increase from east to west and north to south). This numbering system usually holds true even if the local direction of the route does not match the compass directions. Numbers divisible by five are intended to be major arteries among the primary routes, carrying traffic long distances. Primary north–south Interstates increase in number from I-5 between Canada and Mexico along
5633-538: The Wendell H. Ford Western Kentucky Parkway and the Edward T. Breathitt Pennyrile Parkway from Eddyville to Henderson. While these parkways received the I-69 designation by federal legislation signed in 2008, upgrades have been necessary to bring the freeways to Interstate standards —but required less work compared to other states where entirely new highway must be built. A number of construction contracts have been let by
5764-553: The West Coast to I‑95 between Canada and Miami, Florida along the East Coast . Major west–east arterial Interstates increase in number from I-10 between Santa Monica, California , and Jacksonville, Florida , to I-90 between Seattle, Washington , and Boston, Massachusetts , with two exceptions. There are no I-50 and I-60, as routes with those numbers would likely pass through states that currently have US Highways with
5895-895: The rare species that live there. Fiscal conservatives also oppose completion of I-69, arguing that federal legislation establishing the I-69 corridor amounts to an unfunded mandate imposed by the federal government upon the states through which the highway will travel, as the legislation requires states to pursue construction of their portions of I-69 but provides no funding mechanism to cover its estimated $ 25-billion cost, thereby leaving cash-strapped states to figure out how to finance its construction. Three states (Louisiana, Mississippi, and Tennessee) have publicly stated they will not build their sections of I-69 until Congress appropriates funds to complete environmental studies, design, and construction in each state. Interstate Highway [REDACTED] The Dwight D. Eisenhower National System of Interstate and Defense Highways , commonly known as
6026-477: The 2006 Major Moves deal), SIU 7 and SIU 9 in Tennessee; and a small part of SIU 13 in Arkansas ( Monticello Bypass ). Portions of these SIUs have been open to traffic since 2007. While federal legislation established a mandate to extend I-69 from Indiana to Texas, it did not provide funding for its construction. I-69 construction must compete against other projects for traditional funding. Despite
6157-567: The Chicago–Detroit route would have replaced US 112 (now US 12 ), splitting from I-80/I-90 at South Bend . By 1947, the route had been shifted north to present I-94, along what was then US 12, but the connection to South Bend remained, splitting at Kalamazoo . The I-69 designation was assigned to the Indianapolis–Angola route in 1957, while the short South Bend–Kalamazoo route became proposed I-67 . The I-67 designation
6288-576: The Congress Hotel in Chicago. In the plan, Mehren proposed a 50,000-mile (80,000 km) system, consisting of five east–west routes and 10 north–south routes. The system would include two percent of all roads and would pass through every state at a cost of $ 25,000 per mile ($ 16,000/km), providing commercial as well as military transport benefits. In 1919, the US Army sent an expedition across
6419-641: The FHWA authorized TDOT to erect I-69 signs on I-55, I-240, and I-40 from the Mississippi state line to the I-40/SR ;300 interchange. The recently completed I-269 will bypass this part of I-69, beginning where I-69 joins I-55 in Mississippi and ending near Millington, and will include the northern part of SR 385 near Millington. SIU 8 is planned to continue beyond Millington, near US 51, to I-155 near Dyersburg . Despite these plans, it
6550-846: The FHWA in August ;2011 and was approved by the American Association of State Highway and Transportation Officials (AASHTO) in October ;2011; signage was posted at an official ceremony on December 5, 2011; it was resigned as I-69E on May 29, 2013. At the May ;18, 2012, meeting of AASHTO, 35 miles (56 km) of US 59 from I-610 in Houston to Fostoria Road in Liberty County were also approved as ready for I-69 signage. On May 29, 2013,
6681-526: The FHWA initially only approved the route to I-475 in Flint. The continuation to Port Huron was eventually approved in February ;1987. Michigan's 1,241-mile (1,997 km) portion of the Interstate Highway System was completed in 1992, when the last piece of I-69 opened southwest of Lansing between I-96 and Charlotte . ISTEA included two High Priority Corridors that would later become parts of
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#17327653684746812-697: The I-610 loop that runs through Downtown Houston was approved by the FHWA for designation as I-69 on March 9, 2015, and approved for signage as such by the Texas Transportation Commission on March 24, 2015. The nearly 350-mile (560 km) portion of the I-69 extension from south of Clarksdale, Mississippi , to the Louisiana–Texas state line is planned to be built as a new-terrain route that parallels existing U.S. Routes and state highways in some locations. As well as covering
6943-485: The I-69 River Crossing project team for Kentucky and Indiana announced a preferred plan to build a new toll bridge across the Ohio River as part of I-69. In January 2023, contracts were awarded for work on the Kentucky approach to the new bridge (section 1). In March 2023, Kentucky and Indiana signed an initial memorandum of agreement to allow preliminary development and financial planning to move forward. The Indiana approach (section 3) began construction in summer of 2024 with
7074-458: The I-69 alignment is planned to consist of upgrades to existing U.S. Highways, Interstates and substandard freeways, although some sections are expected be built as bypasses around cities and towns along the route. I-69 SIU 9 overlaps I-55 into Memphis, Tennessee , switching there to I-240 and then I-40 before leaving onto the short SR 300 connection and then paralleling US 51 to near Millington . On January 18, 2008,
7205-446: The I-69 corridor to Interstate standards. Several portions of the 15 SIUs in Texas were being worked on, with active construction in progress on US 59 from SH 99 to Kendleton (SIU 20), and on US 77 between Robstown and Kingsville (SIU 22). As of 2016, four mainline SIUs outside of Texas were under construction; SIU 3 in Indiana (using $ 700 million (equivalent to $ 871 million in 2023) from
7336-403: The I-69 extension took shape and remains today as those segments. In 2000, Corridors 18 and 20 were split into 32 SIUs as part of the I-69 (Corridor 18) Special Environmental Study. In Texas, it was originally envisioned that private firms will build, operate, then transfer portions of the highway to the state after a specified period of time. Lawmakers in Kentucky once considered
7467-407: The Interstate Highway System. Assisting in the planning was Charles Erwin Wilson , who was still head of General Motors when President Eisenhower selected him as Secretary of Defense in January 1953. Some sections of highways that became part of the Interstate Highway System actually began construction earlier. Three states have claimed the title of first Interstate Highway. Missouri claims that
7598-424: The Interstate Highway program. The Interstates of Alaska and Puerto Rico are numbered sequentially in order of funding without regard to the rules on odd and even numbers. They also carry the prefixes A and PR , respectively. However, these highways are signed according to their local designations, not their Interstate Highway numbers. Furthermore, these routes were neither planned according to nor constructed to
7729-451: The Kentucky state line to Dyersburg where it will connect with I-155 , a spur that crosses the Mississippi River and extends to I-55 in southeastern Missouri. From there, I-55 extends south running parallel to the Mississippi River on the Missouri–Arkansas side then crosses the river into Memphis. A bypass around Union City, Tennessee has been completed to open to traffic on February 21, 2024. In Texas , I-69 planning has become part of
7860-463: The Lower Rio Grande Valley was detailed as splitting into two routes just south of Victoria , one following US 77 and the other following US 59 and US 281 to the Rio Grande. This act also assigned the I-69 designation to Corridors 18 and 20, with the branches on US 77, US 281, and US 59 to the Rio Grande being "Interstate 69 East", "Interstate 69 Central", and "Interstate 69 West", respectively. With TEA-21,
7991-637: The Mexican border at Laredo, respectively, are SIUs 13 and 14 (original 29 and 30), and two connections to Brownsville and Pharr are SIUs 10 and 15 (original 31 and 32). The I-69/TTC study also includes SIU L-CC, a connection between Freer and Corpus Christi that was not in the 2000 study. The Texas Department of Transportation (TxDOT) originally considered building the I-69/TTC over new terrain paralleling US 59, US 77, and US 281. Responding to widespread opposition from environmental groups and property rights activists, TxDOT announced in June 2008 that it will complete I-69 by upgrading
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#17327653684748122-400: The Monticello Bypass is currently two lanes and signed as US Highway 278 Bypass (US 278 Byp.). Another two-lane segment to McGehee started construction in late 2022. The Charles W. Dean Bridge , SIU 12, is planned to cross the Mississippi River between McGehee, Arkansas, and Benoit, Mississippi , while SIU 11 will parallel US 61 to Tunica Resorts . SIU 10,
8253-480: The Texas Transportation Commission gave approval to naming completed Interstate-standard segments of US 77 and US 281 as I-69. US 77 through Cameron and Willacy counties will be signed as I-69E, including 52 miles (84 km) of existing freeway starting at the Rio Grande in Brownsville and running north past Raymondville . The 13 miles (21 km) of US 281 freeway in Pharr and Edinburg will be signed as I-69C. The section of US 59 inside
8384-427: The U.S. Department of Transportation requesting $ 630 million to build. Construction began on I-69 ORX Section 1 in Kentucky in 2023. It includes numerous roadway and bridge improvements. Nine new bridges are being built and seven bridges are being rehabilitated as part of the new I-69 in Henderson. [1] This section is scheduled for completion in 2025. Construction began on I-69 ORX Section 3 in Indiana in summer 2024 with
8515-506: The US to determine the difficulties that military vehicles would have on a cross-country trip. Leaving from the Ellipse near the White House on July 7, the Motor Transport Corps convoy needed 62 days to drive 3,200 miles (5,100 km) on the Lincoln Highway to the Presidio of San Francisco along the Golden Gate . The convoy suffered many setbacks and problems on the route, such as poor-quality bridges, broken crankshafts, and engines clogged with desert sand. Dwight Eisenhower , then
8646-417: The US 59 freeway corridor through town. A branch ( I-369 ) continues north on US 59 from Tenaha to Texarkana , where it will eventually connect to I-30 and I-49 . Most of the proposed I-69 route in Texas already exists as four-lane highways, with a lengthy freeway section stretching north and south of Houston along US 59 and shorter freeway sections of US 77, US 83, and US 281 in
8777-631: The United States, including: In addition to cancellations, removals of freeways are planned: The American Association of State Highway and Transportation Officials (AASHTO) has defined a set of standards that all new Interstates must meet unless a waiver from the Federal Highway Administration (FHWA) is obtained. One almost absolute standard is the controlled access nature of the roads. With few exceptions , traffic lights (and cross traffic in general) are limited to toll booths and ramp meters (metered flow control for lane merging during rush hour ). Being freeways , Interstate Highways usually have
8908-406: The act designated Corridor 9 as I-99 , no number was assigned to Corridors 18 and 20 yet. The Transportation Equity Act for the 21st Century (TEA-21), enacted in 1998, greatly expanded the definition of Corridor 18 to include the existing I-69, as well as I-94 between Port Huron, Michigan, and Chicago, Illinois . A connection to Pine Bluff, Arkansas, was added, and the extension to
9039-413: The act was signed, and paving started September 26, 1956. The state marked its portion of I-70 as the first project in the United States completed under the provisions of the new Federal-Aid Highway Act of 1956. The Pennsylvania Turnpike could also be considered one of the first Interstate Highways, and is nicknamed "Grandfather of the Interstate System". On October 1, 1940, 162 miles (261 km) of
9170-423: The age of 18 living with them, 68.7% were married couples living together, 5.1% had a female householder with no husband present, and 22.2% were non-families. 18.0% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 2.83. In the township the population was spread out, with 23.2% under
9301-468: The age of 18, 6.2% from 18 to 24, 27.0% from 25 to 44, 27.8% from 45 to 64, and 15.7% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 103.3 males. For every 100 females age 18 and over, there were 103.1 males. The median income for a household in the township was $ 45,903, and the median income for a family was $ 50,474. Males had a median income of $ 33,922 versus $ 24,583 for females. The per capita income for
9432-493: The approval of several segments, work has been completed on only a few scattered segments due in part to increasing costs for construction materials and machinery. As a result, several states have indicated that construction of I-69 may not be possible without the use of tolls as the primary means to finance building the highway. Tennessee, Arkansas, and Mississippi passed legislation authorizing toll roads within each state but have not applied tolling to their sections of I-69 due to
9563-684: The cancellation of the Somerset Freeway . This situation was remedied when the construction of the Pennsylvania Turnpike/Interstate 95 Interchange Project started in 2010 and partially opened on September 22, 2018, which was already enough to fill the gap. However, I-70 remains discontinuous in Pennsylvania , because of the lack of a direct interchange with the Pennsylvania Turnpike at
9694-406: The choice of routing destroyed many well-established neighborhoods, often intentionally as part of a program of " urban renewal ". In the two decades following the 1956 Highway Act, the construction of the freeways displaced one million people, and as a result of the many freeway revolts during this era, several planned Interstates were abandoned or re-routed to avoid urban cores. Construction of
9825-617: The city. In some locations, low speed limits are the result of lawsuits and resident demands; after holding up the completion of I-35E in St. Paul, Minnesota , for nearly 30 years in the courts, residents along the stretch of the freeway from the southern city limit to downtown successfully lobbied for a 45 mph (70 km/h) speed limit in addition to a prohibition on any vehicle weighing more than 9,000 pounds (4,100 kg) gross vehicle weight . I-93 in Franconia Notch State Park in northern New Hampshire has
9956-401: The collection of tolls, some Interstate routes are toll roads , either because they were grandfathered into the system or because subsequent legislation has allowed for tolling of Interstates in some cases. As of 2022 , about one quarter of all vehicle miles driven in the country used the Interstate Highway System, which has a total length of 48,890 miles (78,680 km). In 2022 and 2023,
10087-664: The combination of Corridors 18 and 20 of the National Highway System as designated in the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA), but the federally recognized corridor also includes connecting and existing infrastructure, including I-94 between Chicago, Illinois , and Port Huron, Michigan, and several spurs from I-69. Among these proposed spurs are an extension of I-530 from Pine Bluff, Arkansas ; an upgrade of U.S. Route 59 (US 59) from Texarkana, Texas being designated as Interstate 369 ; and
10218-507: The construction and improvement of highways. The nation's revenue needs associated with World War I prevented any significant implementation of this policy, which expired in 1921. In December 1918, E. J. Mehren, a civil engineer and the editor of Engineering News-Record , presented his "A Suggested National Highway Policy and Plan" during a gathering of the State Highway Officials and Highway Industries Association at
10349-407: The contiguous United States, primary Interstates—also called main line Interstates or two-digit Interstates—are assigned numbers less than 100. While numerous exceptions do exist, there is a general scheme for numbering Interstates. Primary Interstates are assigned one- or two-digit numbers, while shorter routes (such as spurs, loops, and short connecting roads) are assigned three-digit numbers where
10480-513: The description of Corridor 18, specifying that it would serve Mississippi and Arkansas , extending it south to the Mexican border in the Lower Rio Grande Valley and adding a short connection at Brownsville, Texas . This act also specified that Corridors 18 and 20 were "future parts of the Interstate System " to become actual Interstates when built to Interstate Highway standards and connected to other Interstates. Although
10611-623: The discontinuity, but they have been blocked by local opposition, fearing a loss of business. The Interstate Highway System has been expanded numerous times. The expansions have both created new designations and extended existing designations. For example, I-49 , added to the system in the 1980s as a freeway in Louisiana , was designated as an expansion corridor, and FHWA approved the expanded route north from Lafayette, Louisiana , to Kansas City, Missouri . The freeway exists today as separate completed segments, with segments under construction or in
10742-448: The dissemination of public information. As a result, the 2005 evacuation of New Orleans, Louisiana, prior to Hurricane Katrina ran much more smoothly. According to urban legend , early regulations required that one out of every five miles of the Interstate Highway System must be built straight and flat, so as to be usable by aircraft during times of war. There is no evidence of this rule being included in any Interstate legislation. It
10873-496: The eastern end of the concurrency near Breezewood . Traveling in either direction, I-70 traffic must exit the freeway and use a short stretch of US 30 (which includes a number of roadside services) to rejoin I-70. The interchange was not originally built because of a legacy federal funding rule, since relaxed, which restricted the use of federal funds to improve roads financed with tolls. Solutions have been proposed to eliminate
11004-450: The economy. Not just as a public works measure, but for future growth. Clay's committee proposed a 10-year, $ 100 billion program ($ 1.13 trillion in 2023), which would build 40,000 miles (64,000 km) of divided highways linking all American cities with a population of greater than 50,000. Eisenhower initially preferred a system consisting of toll roads , but Clay convinced Eisenhower that toll roads were not feasible outside of
11135-415: The entire route until federal funding is restored. There is no estimated timeline for completion of the entire I-69 route. I-69 currently exists as a number of distinct segments, mostly corresponding to defined sections of independent utility (SIUs): The original portion of I-69 in Indiana (SIU 1 of the overall national plan) starts at an interchange with I-465 , the beltway around Indianapolis on
11266-636: The existing US 59, US 77, and US 281 roadways to Interstate standards through rural areas, with bypasses around urban centers along the route. Instead of building the Trans-Texas Corridor as originally planned, TxDOT now plans to finance upgrading the existing highways to I-69 through private sector investment. Under the proposed arrangement, I-69 would remain toll-free where it overlaps preexisting highways, while bypasses of cities may be tolled. The private firms awarded contracts for I-69 would also build and operate toll roads throughout
11397-555: The existing, largely non-freeway, United States Numbered Highways system. By the late 1930s, planning had expanded to a system of new superhighways. In 1938, President Franklin D. Roosevelt gave Thomas MacDonald , chief at the Bureau of Public Roads, a hand-drawn map of the United States marked with eight superhighway corridors for study. In 1939, Bureau of Public Roads Division of Information chief Herbert S. Fairbank wrote
11528-426: The federal government, Interstate Highways are owned by the state in which they were built. With few exceptions , all Interstates must meet specific standards , such as having controlled access, physical barriers or median strips between lanes of oncoming traffic, breakdown lanes , avoiding at-grade intersections , no traffic lights , and complying with federal traffic sign specifications. Interstate Highways use
11659-459: The fifth segment that extends I-69 through that state in August 2024. A sixth segment of I-69 through Kentucky utilizing that state's existing parkway system and a section of I-24 was established by federal legislation in 2008 with several more parkway segments being upgraded since then. This brings the total length to approximately 880 miles (1,420 km). The proposed extension evolved from
11790-476: The final new terrain segment (SIU 3, Section 4), which takes I-69 from NSWC Crane Division northeast to SR 37 on the southwest side of Bloomington , was completed in December ;2015 and was extended north to Martinsville in late 2018 (Section 5). Section 6 (Martinsville to Indianapolis) of I-69's SIU 3 is currently being upgraded to full Interstate Highway standards all
11921-617: The first completed portion of the I-69 extension, runs east from Tunica Resorts to I-55 near Hernando and opened in late 2006. With the record of decision signed in 2007, the FHWA authorized the Mississippi Department of Transportation (MDOT) to add I-69 signs on I-55 from the I-55/I-69 interchange in Hernando to the Tennessee state line. From a point south of Clarksdale, Mississippi, to Henderson, Kentucky , most of
12052-515: The first three contracts under the new program were signed in Missouri on August 2, 1956. The first contract signed was for upgrading a section of US Route 66 to what is now designated Interstate 44 . On August 13, 1956, work began on US 40 (now I-70) in St. Charles County. Kansas claims that it was the first to start paving after the act was signed. Preliminary construction had taken place before
12183-614: The first time sought to target these funds to the construction of a national road grid of interconnected "primary highways", setting up cooperation among the various state highway planning boards. The Bureau of Public Roads asked the Army to provide a list of roads that it considered necessary for national defense. In 1922, General John J. Pershing , former head of the American Expeditionary Force in Europe during
12314-556: The highest speed limits in a given area. Speed limits are determined by individual states. From 1975 to 1986, the maximum speed limit on any highway in the United States was 55 miles per hour (90 km/h), in accordance with federal law. Typically, lower limits are established in Northeastern and coastal states, while higher speed limits are established in inland states west of the Mississippi River . For example,
12445-553: The highly populated coastal regions. In February 1955, Eisenhower forwarded Clay's proposal to Congress. The bill quickly won approval in the Senate, but House Democrats objected to the use of public bonds as the means to finance construction. Eisenhower and the House Democrats agreed to instead finance the system through the Highway Trust Fund , which itself would be funded by a gasoline tax. In June 1956, Eisenhower signed
12576-617: The highway now designated I‑70 and I‑76 opened between Irwin and Carlisle . The Commonwealth of Pennsylvania refers to the turnpike as the Granddaddy of the Pikes, a reference to turnpikes . Milestones in the construction of the Interstate Highway System include: The initial cost estimate for the system was $ 25 billion over 12 years; it ended up costing $ 114 billion (equivalent to $ 425 billion in 2006 or $ 618 billion in 2023 ) and took 35 years. The system
12707-459: The inefficiency of evacuating from southern Louisiana prior to Hurricane Georges ' landfall in September 1998, government officials looked towards contraflow to improve evacuation times. In Savannah, Georgia , and Charleston, South Carolina , in 1999, lanes of I-16 and I-26 were used in a contraflow configuration in anticipation of Hurricane Floyd with mixed results. In 2004, contraflow
12838-431: The last two digits match the parent route (thus, I-294 is a loop that connects at both ends to I-94 , while I-787 is a short spur route attached to I-87 ). In the numbering scheme for the primary routes, east–west highways are assigned even numbers and north–south highways are assigned odd numbers. Odd route numbers increase from west to east, and even-numbered routes increase from south to north (to avoid confusion with
12969-454: The mainline. Some auxiliary highways do not follow these guidelines, however. The Interstate Highway System also extends to Alaska , Hawaii , and Puerto Rico , even though they have no direct land connections to any other states or territories. However, their residents still pay federal fuel and tire taxes. The Interstates in Hawaii, all located on the most populous island of Oahu , carry
13100-753: The maximum speed limit is 75 mph (120 km/h) in northern Maine, varies between 50 and 70 mph (80 and 115 km/h) from southern Maine to New Jersey, and is 50 mph (80 km/h) in New York City and the District of Columbia. Currently, rural speed limits elsewhere generally range from 65 to 80 miles per hour (105 to 130 km/h). Several portions of various highways such as I-10 and I-20 in rural western Texas, I-80 in Nevada between Fernley and Winnemucca (except around Lovelock) and portions of I-15 , I-70 , I-80 , and I-84 in Utah have
13231-575: The northeast of the township, drains into the Coldwater River . According to the United States Census Bureau , the township has a total area of 21.4 square miles (55.3 km ), of which 19.5 square miles (50.4 km ) is land and 1.9 square miles (4.9 km ), or 8.82%, is water. As of the census of 2000, there were 1,614 people, 643 households, and 500 families residing in the township. The population density
13362-796: The northeast side of that city. I-69 heads northeast to near Anderson , where it turns more easterly to provide indirect access to Muncie before turning more northerly toward Marion and Fort Wayne . In Fort Wayne, I-69 runs along the western edge of the city while I-69's first (and for many years only) signed auxiliary route, I-469 , loops east of the city. After crossing the Indiana East–West Toll Road ( I-80 / I-90 ) near Angola and Fremont , I-69 enters Michigan just south of Kinderhook . I-69 in Michigan runs north passing through Coldwater and Marshall . There, it crosses I-94 east of Battle Creek . Near Olivet , I-69 begins to turn in
13493-404: The number of fatalities on the Interstate Highway System amounted to more than 5,000 people annually, with nearly 5,600 fatalities in 2022. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916 , which provided $ 75 million over a five-year period for matching funds to the states for
13624-430: The official Interstate Highway standards . On one- or two-digit Interstates, the mile marker numbering almost always begins at the southern or western state line. If an Interstate originates within a state, the numbering begins from the location where the road begins in the south or west. As with all guidelines for Interstate routes, however, numerous exceptions exist. Kinderhook, Michigan Kinderhook Township
13755-561: The original Interstate Highway System was proclaimed complete in 1992, despite deviations from the original 1956 plan and several stretches that did not fully conform with federal standards . The construction of the Interstate Highway System cost approximately $ 114 billion (equivalent to $ 618 billion in 2023). The system has continued to expand and grow as additional federal funding has provided for new routes to be added, and many future Interstate Highways are currently either being planned or under construction. Though heavily funded by
13886-622: The part in Texas northeast of Nacogdoches , SIU 16 also extends into Louisiana , ending at US 171 near Stonewall . SIU 15 continues around the south and east sides of the Shreveport area, crossing I-49 and ending at I-20 near Haughton . SIU 14 extends northeast from I-20 to US 82 near El Dorado, Arkansas , and SIU 13 continues northeast to US 65 near McGehee , mainly paralleling US 278 . Also included in Corridor ;18, as SIU 28,
14017-514: The planning phase between them. In 1966, the FHWA designated the entire Interstate Highway System as part of the larger Pan-American Highway System, and at least two proposed Interstate expansions were initiated to help trade with Canada and Mexico spurred by the North American Free Trade Agreement (NAFTA). Long-term plans for I-69 , which currently exists in several separate completed segments (the largest of which are in Indiana and Texas ),
14148-411: The prefix H . There are three one-digit routes in the state ( H-1 , H-2 , and H-3 ) and one auxiliary route ( H-201 ). These Interstates connect several military and naval bases together, as well as the important communities spread across Oahu, and especially within the urban core of Honolulu . Both Alaska and Puerto Rico also have public highways that receive 90 percent of their funding from
14279-537: The route, without regard to the route number. For instance, I-190 in Massachusetts is labeled north–south, while I-195 in New Jersey is labeled east–west. Some looped Interstate routes use inner–outer directions instead of compass directions, when the use of compass directions would create ambiguity. Due to the large number of these routes, auxiliary route numbers may be repeated in different states along
14410-419: The same numbers, which is generally disallowed under highway administration guidelines. Several two-digit numbers are shared between unconnected road segments at opposite ends of the country for various reasons. Some such highways are incomplete Interstates (such as I-69 and I-74 ) and some just happen to share route designations (such as I-76 , I-84 , I‑86 , I-87 , and I-88 ). Some of these were due to
14541-503: The same roadway are signed as traveling in opposite directions; one such wrong-way concurrency is found between Wytheville and Fort Chiswell , Virginia, where I‑81 north and I‑77 south are equivalent (with that section of road traveling almost due east), as are I‑81 south and I‑77 north. Auxiliary Interstate Highways are circumferential, radial, or spur highways that principally serve urban areas . These types of Interstate Highways are given three-digit route numbers, which consist of
14672-693: The state and the FHWA which allowed the Kentucky Transportation Cabinet (KYTC) to erect I-69 signage along the new Interstate's 17-mile (27 km) overlap with I-24 and the 38-mile (61 km) stretch of the Western Kentucky Parkway between I-24 and the Pennyrile Parkway. Signage was placed in late 2011, with construction on necessary upgrades of the portion of the Western Kentucky Parkway expected to be bid in September. On October 25, 2011, I-69
14803-444: The state of Kentucky to reconfigure several interchanges along the parkways. Many of these interchanges were originally designed with opposing loop ramps to accommodate toll barriers at the interchanges; these "tollbooth" style interchanges were (or will be) reconfigured to standard diamond interchanges as part of the parkways' conversion to I-69. On August 31, 2011, Kentucky Governor Steve Beshear announced an agreement between
14934-444: The state which has decided there's value in having a continuous chain of freeways running partly on other completed Interstates between Memphis and the Kentucky state line. SIU 7 follows the existing US 51 freeway with new bypasses to the state line at Fulton, Kentucky . Completion of this stretch of I-69 where it bypasses Union City opens to traffic temporarily signed as State Route 690 on February 21, 2024. A bypass for Troy
15065-405: The state; some of those revenues would then be applied to I-69 construction. A stated goal of TxDOT's I-69 initiative is that "existing suitable freeway sections of the proposed system be designated as I-69 as soon as possible". In response to TxDOT's request, a six-mile (9.7 km) segment of US 77 between I-37 and SH 44 near Corpus Christi was approved for the "I-69" designation by
15196-495: The war, complied by submitting a detailed network of 20,000 miles (32,000 km) of interconnected primary highways—the so-called Pershing Map . A boom in road construction followed throughout the decade of the 1920s, with such projects as the New York parkway system constructed as part of a new national highway system. As automobile traffic increased, planners saw a need for such an interconnected national system to supplement
15327-633: The way north-northeast to I-465 on the southwest side of Indianapolis. The project is referred to as I-69 Finish Line Project. I-69 became a continuous segment in Indiana with the opening of the I-69/I-465 interchange on the south side of Indianapolis in August 2024. The new I-69 in Mississippi and Tennessee starts at an at-grade intersection with the former route of Mississippi Highway 304 (MS 304) in Banks , Tunica County, Mississippi. It continues roughly north-northeast, crossing into DeSoto County to
15458-422: The west side of the Mississippi River. This will provide an interim direct freeway link to Memphis that will bypass the suspended segment 8 pending its eventual completion to take I-69 even more directly into Memphis. The Tennessee Department of Transportation (TDOT) halted the Interstate work about four years earlier because they lacked federal funding for the project. The revived portion of I-69 will run from
15589-544: The widening and increasing of support for the inside shoulders to serve as temporary travel lanes on the final 1.5 mile stretch of I-69 eastward from its temporary end at the US 41 interchange. Construction of the bridge (section 2) is currently scheduled to begin in 2027 and be completed in 2031, although efforts to speed up the timeframe are being explored. In 2021, Tennessee announced it was reviving construction of segment 7 of I-69 in northwestern Tennessee to link it to I-55 on
15720-536: The widening and strengthening of shoulders along I-69 east of its current end at US 41 to hold traffic during construction. [2] ORX Section 2 is the actual construction of the bridge and it will be supported by toll revenue supplemented by traditional federal and state dollars. A financial plan was developed in 2021 and will be updated annually until construction is complete in 2029. [3] At the October 18, 2013, AASHTO meeting, an Indiana Department of Transportation (INDOT) request to redesignate I-164 as part of I-69
15851-628: The widespread unpopularity of toll roads in these states. A bridge over the Ohio River , which was to have been built along I-69 to connect Indiana with Kentucky, stalled in 2004 because each state did not have enough funding for it. In 2016, both states reached an agreement to restart environmental studies and develop a funding strategy for the Ohio River crossing; more funding has allowed for design and construction work to begin since that time. Tennessee has suspended work on I-69 indefinitely due to
15982-477: Was 82.9 inhabitants per square mile (32.0/km ). There were 1,184 housing units at an average density of 60.8 per square mile (23.5/km ). The racial makeup of the township was 96.72% White , 0.31% African American , 0.62% Native American , 0.06% Asian , 0.06% Pacific Islander , 1.18% from other races , and 1.05% from two or more races. Hispanic or Latino of any race were 1.49% of the population. There were 643 households, out of which 30.5% had children under
16113-418: Was added to the proposed "Interregional Highway System" by the early 1940s. Unlike most of the routes, it was not drawn along an existing U.S. Route corridor, except north of Fort Wayne (where it used US 27 ); most of it ran roughly parallel to SR 9 and SR 37 . The extension beyond Angola to I-94 near Marshall, Michigan , actually started out as part of what evolved into I-94. On early plans,
16244-437: Was approved, pending concurrence from the FHWA. I-69 was officially designated on this corridor in late 2014. SIU 3, connecting I-69 to I-465 in southern Indianapolis , will roughly parallel SR 57 and SR 45 and will use an upgraded version of the existing SR 37 from just south of Bloomington to a point just south of Indianapolis. A 67-mile (108 km) stretch from Evansville to NSWC Crane Division
16375-401: Was completed on November 19, 2012, and the remaining 27-mile (43 km) portion to Bloomington opened to traffic on December 9, 2015. Construction on upgrading a 21-mile (34 km) section of SR 37 from Bloomington to just south of Martinsville to Interstate standards was completed in late 2018. Construction began in 2019 on the final segment from Martinsville to Indianapolis,
16506-525: Was designated and resigned on November 16, 2015. The Purchase Parkway between Mayfield and Calvert City was signed in July ;2018. The next phase of upgrading Purchase Parkway from Mayfield to the Tennessee state line began in December 2022 and is expected to be done by December 15, 2024. A bridge spanning the Ohio River is the last remaining piece to connect the two states. The Indiana and Kentucky governors agreed on June 30, 2016, to spend
16637-551: Was employed ahead of Hurricane Charley in the Tampa, Florida area and on the Gulf Coast before the landfall of Hurricane Ivan ; however, evacuation times there were no better than previous evacuation operations. Engineers began to apply lessons learned from the analysis of prior contraflow operations, including limiting exits, removing troopers (to keep traffic flowing instead of having drivers stop for directions), and improving
16768-450: Was officially designated by Beshear along a 55-mile (89 km) stretch of I-24 and the Western Kentucky Parkway between Calvert City and Nortonville . Signage and milemarkers were replaced on the 38-mile (61 km) stretch of the Western Kentucky Parkway in mid-December 2012. An additional 43.6 miles (70.2 km) along the Pennyrile Parkway from the Western Kentucky Parkway to Kentucky Route 425 (KY 425), south of Henderson,
16899-422: Was proclaimed complete in 1992, but two of the original Interstates— I-95 and I-70 —were not continuous: both of these discontinuities were due to local opposition, which blocked efforts to build the necessary connections to fully complete the system. I-95 was made a continuous freeway in 2018, and thus I-70 remains the only original Interstate with a discontinuity. I-95 was discontinuous in New Jersey because of
17030-494: Was serving as Supreme Commander of Allied Forces in Europe during World War II . In 1954, Eisenhower appointed General Lucius D. Clay to head a committee charged with proposing an interstate highway system plan. Summing up motivations for the construction of such a system, Clay stated, It was evident we needed better highways. We needed them for safety, to accommodate more automobiles. We needed them for defense purposes, if that should ever be necessary. And we needed them for
17161-523: Was shifted east to the US ;27 corridor by early 1958, eventually being absorbed into the extension of I-69 to I-94 near Marshall which was built in 1967. The Federal-Aid Highway Act of 1968 authorized an additional 1,500 miles (2,400 km) of Interstates to be chosen by the FHWA; among Michigan's proposals was a 156-mile (251 km) extension of I-69 northeast and east via US 27 to Lansing , M-78 to Flint , and M-21 to Port Huron . However,
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