A concurrency in a road network is an instance of one physical roadway bearing two or more different route numbers . When two roadways share the same right-of-way , it is sometimes called a common section or commons . Other terminology for a concurrency includes overlap , coincidence , duplex (two concurrent routes), triplex (three concurrent routes), multiplex (any number of concurrent routes), dual routing or triple routing .
57-709: (Redirected from I-580 ) Interstate 580 is or was the designation for several Interstate Highways in the United States, all of which are related to Interstate 80 : Interstate 580 (California) , a spur connecting the San Francisco Bay Area to the San Joaquin Valley from U.S. Route 101 to Interstate 5 Interstate 580 (Nevada) , a spur connecting Carson City, Nevada to Reno, Nevada (also signed as U.S. Route 395) Interstate 580 (Nebraska) ,
114-465: A combination of at least two route numbers on the same physical roadway. This is often practically advantageous as well as economically advantageous; it may be better for two route numbers to be combined into one along rivers or through mountain valleys. Some countries allow for concurrencies to occur, however, others specifically do not allow it to happen. In those nations which do permit concurrencies, it can become very common. In these countries, there are
171-589: A former route and now part of U.S. Route 75 in Omaha, Nebraska [REDACTED] Topics referred to by the same term This disambiguation page lists articles about roads and streets with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Interstate_580&oldid=1161043766 " Categories : Road disambiguation pages Interstate 80 Hidden categories: Short description
228-491: A major city, it is often economically and practically advantageous for them all to be accommodated on a single physical roadway. In some jurisdictions, however, concurrent numbering is avoided by posting only one route number on highway signs; other route numbers disappear at the start of the concurrency and reappear when it ends. However, any route that becomes unsigned in the middle of the concurrency will still be signed on most maps and road atlases. Most concurrencies are simply
285-453: A milestone in the history of highway construction in the United States. It was also noted at the dedication that this was only 50 miles (80 km) south of Promontory Summit , where another first in a transcontinental artery was completed—the golden spike of the US's first transcontinental railroad . John McPhee described the geology revealed by the building of I-80 in a series of books on
342-593: A section of a continuous Highway 403, the new link was designated as a western extension of the tolled Highway 407, with the Mississauga section of Highway 403 planned to be renumbered as Highway 410. The renumbering to 410 never came to pass, and consequently Highway 403 was signed concurrently along the Queen Elizabeth Way in 2002, remedying the discontinuity. Nonetheless, many surface street signs referring to that section of freeway with
399-423: A single numbered route across each province (an exception being the switching of the designation between Nova Scotia Highways 104 and 105 ), or has branches that are signed exclusively as TCH routes. In Ontario and Quebec, The TCH follows a series of provincial highways, and also has branches that follow sections of others that have concurrencies with it, signed with TCH shields alongside the provincial number. In
456-554: A variety of concurrences which can occur. An example of this is the concurrency of Interstate 70 (I-70) and I-76 on the Pennsylvania Turnpike in western Pennsylvania . I-70 merges with the Pennsylvania Turnpike so the route number can ultimately continue east into Maryland; instead of having a second physical highway built to carry the route, it is combined with the Pennsylvania Turnpike and
513-722: Is a toll road , containing most of both the Indiana Toll Road and the Ohio Turnpike . I-80 runs concurrently with I-90 from near Portage, Indiana , to Elyria, Ohio . In Pennsylvania , I-80 is known as the Keystone Shortway , a non-tolled freeway that crosses rural north-central portions of the state on the way to New Jersey and New York City. I-80 begins at an interchange with US Route 101 (US 101) in San Francisco and then crosses
570-577: Is different from Wikidata All article disambiguation pages All disambiguation pages Interstate 80 Interstate 80 ( I-80 ) is an east–west transcontinental freeway that crosses the United States from San Francisco, California , to Teaneck, New Jersey , in the New York metropolitan area . The highway was designated in 1956 as one of the original routes of the Interstate Highway System ; its final segment
627-465: Is in downtown Athens, Georgia , between exits 4 and 8 of SR 10 Loop , where the highway is concurrent with US 29 , US 78 , US 129 , US 441 , SR 8 , SR 15 , and SR 422. In the United States, concurrencies are simply marked by placing signs for both routes on the same or adjacent posts. The federal Manual on Uniform Traffic Control Devices prescribes that when mounting these adjacent signs together that
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#1732787237904684-930: Is located within 10 miles (16 km) of the Michigan state line but does not enter that state. From the State Road ;9 (SR 9) and I-80/I-90 interchange, the sign marking the Indiana–Michigan state line is visible. I-80/I-90 passes through the South Bend–Mishawaka metropolitan area , passing the University of Notre Dame and the University Park Mall , intersecting with the St. Joseph Valley Parkway . At another point in northern Indiana, I-80/I-90 comes within about 200 yards (180 m) of
741-554: Is officially designated " Daniel Interchange ", providing half of the possible interchange directions. It is a one-mile (1.6 km) segment consisting of eight lanes providing high-speed access between the two highways. Access from Highway 1 west to Highway 6 south and Highway 6 north to Highway 1 east is provided via Route 431 , while access between Highway 1 east to Highway 6 north and Highway 6 south to Highway 1 west are provided at Ben Shemen Interchange. The other movements are provided through
798-600: Is signed) and Interstate 81 (which runs primarily northeast–southwest, but is also signed north–south). A vehicle might simultaneously be on I-77 northbound and I-81 southbound, while actually traveling due westbound. An unusual example of a three-directional concurrency occurs southeast of Rhinelander, Wisconsin , where US 8 westbound (the actual compass direction) converges with southbound Wisconsin Highway 17 and northbound Wisconsin Highway 47 , and vice-versa. Often when two routes with exit numbers overlap, one of
855-819: Is the highest community on I-80. Farther west in Wyoming, the Interstate passes through the dry Red Desert and over the Continental Divide . In a way, the highway crosses the Divide twice, since two ridges of the Rocky Mountains split in Wyoming, forming the endorheic Great Divide Basin , from which surface water cannot drain but can only evaporate. I-80 enters Nebraska west of Bushnell . The western portion of I-80 in Nebraska runs very close to
912-742: Is the main east–west freeway through the central part of the state. It runs from the Ohio state line near Sharon to the Delaware Water Gap Toll Bridge over the Delaware River and is called the "Z.H. Confair Memorial Highway". It traverses the extreme northern section of Greater Pittsburgh . I-80 serves as the western terminus for I-376 which connects it to Pittsburgh International Airport and on to Downtown Pittsburgh and suburban Pittsburgh. I-80 intersects I-79 , which connects with Erie (about 75 miles (121 km) to
969-589: The American Association of State Highway and Transportation Officials for permission to truncate US 27 at Fort Wayne, Indiana . In 2002, Michigan removed the US ;27 designation from I-69 and extended the US ;127 designation from Lansing to Grayling. MDOT's stated reason for the modification was to "reduce confusion along the US 27/US 127 corridor". After US 27's signage
1026-668: The Great Salt Lake . The longest stretch between exits on an Interstate Highway is located between Wendover and Knolls , with 37.4 miles (60.2 km) between those exits. This portion of I-80, crossing the Great Salt Lake Desert , is extremely flat and straight, dotted with large warning signs about driver fatigue and drowsiness. East of the salt flats, I-80 passes the southern edge of Great Salt Lake and continues on through Salt Lake City , where it merges with I-15 for three miles (5 km) before entering
1083-754: The Mississippi River into Illinois. The majority of the highway runs through farmland, yet roughly a third of Iowa's population live along the I-80 corridor. In Illinois , I-80 runs from the Fred Schwengel Memorial Bridge across the Mississippi River south to an intersection with I-74 . It then runs east across north-central Illinois just north of the Illinois River to Joliet . I-80 continues east through
1140-593: The Oklahoma – Arkansas state line. At the northern end of this border Oklahoma State Highway 20 runs concurrently with Arkansas Highway 43 and the two highways run north–south along the boundary. Concurrencies are also found in Canada. British Columbia Highway 5 continues east for 12 kilometres (7.5 mi) concurrently with Highway 1 and Highway 97 , through Kamloops . This stretch of road, which carries Highway 97 south and Highway 5 north on
1197-815: The Pennsylvania Department of Transportation (PennDOT) and the PTC signed a 50-year lease agreement, which would allow the PTC to maintain and, eventually, toll I-80. However, the application for a toll was rejected by the Federal Highway Administration (FHWA). I-80 does not enter New York City . Once the I-95 / New Jersey Turnpike was extended in 1971 from its former terminus at US 46 in Ridgefield to I-80 in Teaneck ,
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#17327872379041254-577: The Reno metropolitan area , and it also goes through the towns of Fernley , Lovelock , Winnemucca , Battle Mountain , Elko , Wells , and West Wendover on its way through the state. The Nevada portion of I-80 follows the paths of the Truckee and Humboldt rivers, which have been used as a transportation corridor since the California Gold Rush of the 1840s. The Interstate also follows
1311-535: The San Francisco–Oakland Bay Bridge into Oakland . It then heads northeast through Vallejo , Sacramento , and the Sierra Nevada before crossing into Nevada . A portion of the route through Pinole involved the experimental transplantation of the rare species Santa Cruz tarplant in the right-of-way . In Nevada , I-80 traverses the northern portion of the state. The freeway serves
1368-790: The Wasatch Range east of the city. It ascends Parleys Canyon and passes within a few miles of Park City as it follows a route through the mountains toward the junction with the eastern terminus of the western section of I-84 . From the junction it continues up Echo Canyon and on toward the border with Wyoming , near Evanston . The route of the Utah section of I-80 is defined in Utah Code Annotated § 72-4-113(10). In Wyoming , I-80 reaches its maximum elevation of 8,640 feet (2,630 m) above sea level at Sherman Summit , near Buford , which, at 8,000 feet (2,400 m),
1425-509: The concurrency of I-75 and I-85 in Atlanta, Georgia —where I-75 is dominant—the exit numbers range from 242 to 251, while I-85's highest independent mile marker in Georgia is 179. Some brief concurrencies in the past have been eliminated by reassigning the designations along the roadways. This can involve scaling back the terminus of one designation to the end of a concurrent section. At
1482-606: The southern suburbs of Chicago and joins I-94 just before entering Indiana. In Indiana , I-80 runs concurrently with another Interstate Highway for its entire length. It runs with I-94 on the Borman Expressway from the Illinois state line to Lake Station, Indiana , then with I-90 on the Indiana Toll Road from Lake Station to the Ohio state line. Between La Porte and the Toledo metropolitan area , I-80/I-90
1539-601: The Border Fault, it pussyfoots along on morainal till that levelled up the fingers of the foldbelt hills. It does a similar dance with glacial debris in parts of Pennsylvania. It needs no assistance on the craton. It climbs a ramp to the Rockies and a fault-block staircase up the front of the Sierra. It is geologically shrewd. It was the route of animal migrations, and of human history that followed. It avoids melodrama, avoids
1596-586: The Czech Republic, the European route numbers are only additional, and they are always concurrent with the state route numbering, usually highways or first-class roads. In the state numbering system, concurrences exist only in first-class and second-class roads; third class roads do not have them. The local term for such concurrences is peáž (from the French word péage ). In the road register, one of
1653-533: The Grand Canyons, the Jackson Holes, the geologic operas of the country, but it would surely be a sound experience of the big picture, of the history, the construction, the components of the continent. Concurrency (road) Concurrent numbering can become very common in jurisdictions that allow it. Where multiple routes must pass between a single mountain crossing or over a bridge, or through
1710-619: The Grand Island area and milemarker 390 near Lincoln . Along this length, the road does not vary from an ideally straight line by more than a few yards. After Lincoln, I-80 turns northeast toward Omaha . It then crosses the Missouri River in Omaha to enter the state of Iowa . Part of I-80 in Nebraska is marked as a Blue Star Memorial Highway . I-80 is the longest Interstate Highway in Iowa . It extends from west to east across
1767-613: The I-76 designation. The longest Interstate Highway concurrency is I-80 and I-90 for 278 miles (447 km) across Indiana and Ohio . There are at least two examples of eight-way concurrencies. The first example is in Indianapolis, between exits 46 and 47 of the 53-mile (85 km) I-465 beltway , where the highway is concurrent with I-69 , U.S. Highway 31 (US 31), US 36 , US 40 , US 52 , US 421 , and State Road 67 . The second example
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1824-647: The Michigan border. In Ohio , I-80/I-90 enters from the Indiana Toll Road and immediately becomes the Ohio Turnpike. The two Interstates cross rural northwest Ohio and run just south of the Toledo metropolitan area . In Rossford , the turnpike intersects I-75 in an area known as the Crossroads of America. This intersection is one of the largest intersections of three Interstate Highways in
1881-629: The Mississippi River, 2,250 feet (690 m), although other Interstate Highways east of the Mississippi, including I-26 in North Carolina and Tennessee, reach higher elevations. In 2007, the Pennsylvania Turnpike Commission (PTC), combined with state legislature Act No. 44, initiated plans to enact a tolling system on the entire span of I-80 throughout the commonwealth of Pennsylvania. On October 15, 2007,
1938-707: The QEW/Highway ;403 concurrency still only use the highway's original designation of QEW, although the MTO has updated route markers on the QEW to reflect the concurrency. At the national level, the Trans-Canada Highway , which does not bear a uniform number in the eastern provinces, follows various provincial highways. In the Atlantic Provinces the main designated TCH route either follows
1995-903: The UK, the existence of these concurrencies is purely theoretical. In Sweden and Denmark, the most important highways use only the European route numbers that have cardinal directions. In Sweden the European route E6 and E20 run concurrently for 280 kilometres (170 mi). In Denmark the E47 and E55 run concurrently for 157 kilometres (98 mi). There are more shorter concurrencies. There are two stretches in Sweden and Denmark where three European routes run concurrently; these are E6, E20 and E22 in Sweden, and E20, E47, and E55 in Denmark. Along all these concurrencies, all route numbers are posted with signs. In
2052-635: The United Kingdom, routes do not run concurrently with others. Where this would normally occur, the roadway takes the number of only one of the routes (usually, but not always, the most important route), while the other routes are considered to have a gap and are signed in brackets (the equivalent of "to" signs in North America). An example is the meeting of the M60 and the M62 northwest of Manchester :
2109-451: The United States. In Elyria Township , just west of Cleveland , I-90 splits from I-80, leaving the turnpike and running northeast as a freeway. I-80 runs east-southeast through the southern suburbs of Cleveland. Just northwest of Youngstown , the Ohio Turnpike continues southeast as I-76 , while I-80 exits the turnpike and runs east to the north of Youngstown, entering Pennsylvania south of Sharon, Pennsylvania . In Pennsylvania , I-80
2166-673: The central portion of the state through the population centers of Council Bluffs , Des Moines, and the Quad Cities . It enters the state at the Missouri River in Council Bluffs and heads east through the southern Iowa drift plain . In the Des Moines metropolitan area , I-80 meets up with I-35 and the two routes bypass Downtown Des Moines together while I-235 proceeds straight through the metro and rejoins both on
2223-455: The concurrency. Since highways in the United States and Canada are usually signed with assigned cardinal directions based on their primary orientation, it is possible for a stretch of roadway shared between two highways to be signed with conflicting, even opposite, cardinal directions in a wrong-way concurrency . For example, near Wytheville, Virginia , there is a concurrency between Interstate 77 (which runs primarily north–south, as it
2280-412: The far side. In Ankeny , the Interstates split and I-80 continues east. On the west edge of the Iowa City metropolitan area , it intersects I-380 , a segment of the Avenue of the Saints . Northwest of the Quad Cities in Walcott is Iowa 80 , the world's largest truckstop. I-80 passes along the northern edge of Davenport and Bettendorf and leaves Iowa via the Fred Schwengel Memorial Bridge over
2337-467: The first road across the United States. The highway roughly traces other historically significant travel routes in the Western United States : the Oregon Trail across Wyoming and Nebraska , the California Trail across most of Nevada and California , the first transcontinental airmail route, and the route of the first transcontinental railroad , except for the vicinity of the Great Salt Lake . From near Chicago east to near Youngstown, Ohio , I-80
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2394-481: The formation of the continent of North America , books that were published between 1981 and 1993 and collected in a one-volume edition in 1998 Annals of the Former World which won a Pulitzer Prize in 1999. In "Basin and Range" (1981), he described how the idea emerged in a conversation with Princeton geologist Kenneth S. Deffeyes : What about Interstate 80, I asked him. It goes the distance. How would it be? "Absorbing," he said. And he mused aloud: After 80 crosses
2451-424: The historical routes of the California Trail , first transcontinental railroad , and Feather River Route throughout portions of the state. I-80 in Nevada closely follows, and at many points directly overlaps, the original route of the Victory Highway , State Route 1 (SR 1), and US 40 . After crossing Utah 's western border in Wendover , I-80 crosses the desolate Bonneville Salt Flats west of
2508-416: The motorways coincide for the seven miles (11 km) between junctions 12 and 18 but the motorway between those points is only designated as the M60 (although in this case the same junction numbers would also apply to the M62). European route numbers as designated by UNECE may have concurrencies (for instance E15 and E30 around Greater London ), but since the E-route numbers are unsigned and unused in
2565-504: The north) and Pittsburgh (about 55 miles (89 km) to the south). Further east, I-99 connects with State College and Altoona . A spur from I-80 ( I-180 ) runs to Williamsport . Upon entering the Pocono Mountains region, I-80 meets I-81 , connecting Syracuse, New York , and Harrisburg , and I-476 which connects with Scranton , Wilkes-Barre , Allentown , and Philadelphia . Another spur ( I-380 ) runs to Scranton. In Clearfield County , I-80 reaches its highest elevation east of
2622-469: The numbers will be arranged vertically or horizontally in order of precedence. The order to be used is Interstate Highways , U.S. Highways , state highways , and finally county roads , and within each class by increasing numerical value. Several states do not officially have any concurrencies, instead officially ending routes on each side of one. There are several circumstances where unusual concurrencies exist along state borders. One example occurs along
2679-430: The province's only concurrency between two 400-series highways . The concurrency was not in the original plan which intended for both the QEW and Highway 403 to run parallel to each other, as the Hamilton–Brantford and Mississauga sections of Highway 403 were initially planned to be linked up along a corridor (later planned to be tolled ) now occupied by Highway 407 . To avoid forcing drivers to pay tolls to use
2736-410: The roads is considered the main ("source") road and the others as the péaging (guest) roads. The official road map enables a maximum of five concurrent routes of the intrastate numbering system. Cycling routes and hiking routes are often concurrent. In Israel, two freeways , the Trans-Israel Highway (Highway 6), and Highway 1 run concurrently just east of Ben Shemen Interchange . The concurrency
2793-434: The routes has its exit numbers dominate over the other and can sometimes result in having two exits of the same number, albeit far from each other along the same highway. An example of this is from the concurrency of I-94 and US 127 near Jackson , Michigan. The concurrent section of freeway has an exit with M-106 , which is numbered exit 139 using I-94's mileage-based numbers. US 127 also has another exit 139 with
2850-498: The same roadway (and vice versa), is the only wrong-way concurrency in British Columbia. Concurrencies are also very common in Quebec . Most notably, the Samuel-de-Champlain Bridge features a concurrency with three Autoroutes: A-10 , A-15 , and A-20 . Another example is A-55 , which runs concurrently with A-10, A-20, and A-40 , all of which are major highways. In Ontario , the Queen Elizabeth Way and Highway 403 run concurrently between Burlington and Oakville , forming
2907-443: The same time, there could be an extension of another highway designation that is used to replace the newly shortened designation with another one. Between states, US 27 in Michigan previously ran concurrently with I-69 from the Michigan–Indiana state line to the Lansing, Michigan , area. From there it turned northwards to its terminus at Grayling . In 1999, the Michigan and Indiana departments of transportation petitioned
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#17327872379042964-506: The section from Teaneck to Fort Lee was resigned as I-95, and it is the latter roadway that enters New York City via the George Washington Bridge . I-80's designated end (as per signage and New Jersey Department of Transportation (NJDOT) documents) is four miles (6.4 km) short of New York City in Teaneck, before the Degraw Avenue overpass. There, signs designate the end of I-80 and the beginning of I-95/New Jersey Turnpike northbound. One section of I-80 running from Netcong to Denville
3021-436: The southern end of the US 127 business loop in Mount Pleasant , Michigan. (US 127's mile markers in Michigan reflect the cumulative distance north of the Ohio state line; the numbers resume north of the I-94 overlap and reflect the distance accumulated on that concurrency.) However, there are also instances where the dominant exit number range is far more than the secondary route's highest exit number, for example
3078-439: The state of Colorado , without entering the state. The intersection of I-76 and I-80 is visible from the Colorado–Nebraska state line. From its intersection with I-76 to Grand Island , I-80 lies in the valley of the South Platte River and the Platte River . The longest straight stretch of Interstate anywhere in the Interstate Highway System is the approximately 72 miles (116 km) of I-80 occurring between exit 318 in
3135-401: Was constructed in 1958. I-80 was included in the original plan for the Interstate Highway System as approved in 1956. The highway was built in segments, with the final piece of I-80 completed in 1986 on the western edge of Salt Lake City . This piece was coincidentally dedicated close to the 30th birthday of the Interstate Highway System, which was noted at the dedication and considered to be
3192-421: Was opened in 1986. The second-longest Interstate Highway in the United States after I-90 , it runs through many major cities, including Oakland , Sacramento , Reno , Salt Lake City , Omaha , Des Moines , and Toledo and passes within 10 miles (16 km) of Chicago , Cleveland , and New York City . I-80 is the Interstate Highway that most closely approximates the route of the historic Lincoln Highway ,
3249-426: Was removed, the highway north of the Lansing area was renumbered US 127, and the US 27 designation was removed from I-69. Some consolidation schemes involve the use of incorporating two single-digit numbers onto one marker, as along the US 1/9 concurrency in northern New Jersey . In the mid-20th century, California had numerous concurrencies, but the California Legislature removed most of them in
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