40-562: (Redirected from I-15 ) I15 may refer to: Interstate 15 , a north–south Interstate Highway in the United States of America Polikarpov I-15 , a Soviet fighter aircraft I15 (band) , a band Japanese submarine I-15 , of the Imperial Japanese Navy Älvsborg Regiment (I 15) a former Swedish Army infantry regiment [REDACTED] Topics referred to by
80-549: A business route of US 93/US 95 after the freeway was completed, but that designation has since been removed; it is now just SR 582 . The I-515 freeway, which began construction in 1982, is a continuation of the Oran K. Gragson Freeway (named for the former Las Vegas mayor who advocated for the construction of the then Las Vegas Expressway ) which ran primarily along the former West Fremont Street alignment between Las Vegas Boulevard and Rainbow Boulevard . The spur
120-556: A direct freeway connection with Henderson. In August 2017, the segment of I-515 between the I-215 interchange and the southern city limits of Henderson was redesignated as I-11 . The Nevada Department of Transportation announced in 2022 that part of the preferred alternative for the future northward extension of I-11 would follow the remainder of the I-515 alignment. Signs for I-11 along I-515 and US 95 north of I-15 began to go up in 2024, and
160-515: A direct, high-speed route, and it ran concurrently with, US 93, and US 95 along its entire length. The I-515 designation was first approved in 1976, but construction did not begin until 1982, and was constructed in stages until it reached its former terminus north of Railroad Pass in 1994, when signs of the designation finally were put up. I-515 was built to bypass Fremont Street and Boulder Highway, both of which were former alignments of US 93, US 95, and US 466 , and provide
200-560: A high-speed maglev train route to relieve highway congestion. Proposals from as early as the 1970s were succeeded by the California–Nevada Interstate Maglev project, which was studied from 2004 to 2010 but never realized. Amtrak ran a conventional passenger rail service between the two cities, named the Desert Wind , from 1979 to 1997. The Brightline West line, a conventional high-speed rail service under
240-690: A long-haul route for North American commerce. It is now officially chartered for this purpose: from the junction of I-515 in Las Vegas to the Canadian border , I-15 forms part of the CANAMEX Corridor , a High Priority Corridor , as a result of the North American Free Trade Agreement . Since the construction of I-15, California, Idaho, Nevada, and Utah have consistently ranked in the fastest-growing areas of
280-462: A private operator, broke ground in 2024 and is scheduled to commence in 2028 with service between Rancho Cucamonga and Las Vegas. It will use the median of I-15 for most of its 218-mile (351 km) route and reach speeds of up to 186 miles per hour (299 km/h). The segment signed as SR 15 from I-5 to I-8 in San Diego is planned to be redesignated as part of I-15 once this segment
320-478: A spectacular section where the road twists between the narrow walls of the Virgin River Gorge . I-15 continues through Utah for 401 miles (645 km). It is the main north–south connection for the state. The highway approximately follows the old alignment of US 91 from St. George to Brigham City . The highway passes through the fast-growing Utah's Dixie region in the southwestern part of
360-490: Is 1,433 miles (2,306 km) long from San Diego to Sweet Grass. North of its junction with SR 91 in Corona , the route roughly follows the former routes of State Route 31. North of Devore , the highway follows the approximate alignment of historic US Route 66 along with US 91 and US 395 . US 395 breaks away at Hesperia and the route continues on a direct path to Barstow 35 miles (56 km) to
400-912: Is at a junction with I-8 and State Route 15 (SR 15) in San Diego, and the northern end is at a connection with Alberta Highway 4 at the Sweetgrass–Coutts Border Crossing . I-15 was built to connect the Inland Empire with San Diego in California, facilitate tourism access to Las Vegas, provide access to the Arizona Strip , interconnect all of the metropolitan statistical areas in Utah except for Logan , and provide freeway bypasses for Pocatello , Idaho Falls, and Great Falls. Since its creation, I-15 has served as
440-465: Is completely converted to Interstate standards , namely where the freeway's interchange with SR 94 is concerned. The interchange currently has left-exits and blind merges, and is due to be updated with a widening of both SR 15 and SR 94. At that time, SR 15 is planned be resigned as part of I-15. The remaining portion of SR 15 conforms with Interstate standards. Source: Interstate 515 Interstate 515 ( I-515 )
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#1732765902951480-809: Is currently in the process of being widened. The portions in Arizona, Idaho and Montana have retained their rural, long-haul character. Although Arizona has also grown substantially since the construction of I-15, this highway serves only the isolated corner of northwestern Arizona. Due to this rapid area growth, the I-15 corridor is the focus of several mass transit projects. The Las Vegas Monorail , FrontRunner commuter rail system, and TRAX light rail in Salt Lake City are mass transit lines loosely parallel to I-15 that are now in operation. The Los Angeles–Las Vegas corridor has long been proposed as
520-664: Is different from Wikidata All article disambiguation pages All disambiguation pages Interstate 15 Interstate 15 ( I-15 ) is a major Interstate Highway in the Western United States , running through Southern California and the Intermountain West . I-15 begins near the Mexican border in San Diego County and stretches north to Alberta, Canada , passing through
560-734: The Las Vegas Strip corridor. Then, the Interstate crosses the border with Arizona in Mesquite . The Interstate in Nevada runs entirely in Clark County , for a distance of 123.8 miles (199 km). I-15 passes through the northwestern corner of Arizona with a total length of 29.4 miles (47 km). The stretch is separated from the rest of the state and has one major exit, at Beaver Dam / Littlefield, Arizona . It includes
600-725: The Utah state line in Oneida County . The highway runs through Pocatello , Blackfoot , and Idaho Falls , intersecting with I-86 . The last county in Idaho that I-15 passes through is Clark County . Finally, the Interstate reaches the Montana state line at Monida Pass . I-15 continues onward through 396 miles (637 km) of Montana through the cities of Butte , Helena , and Great Falls , intersecting with I-90 , I-115 , and I-315 . At Sweet Grass , I-15 terminates upon crossing
640-584: The Wasatch Front , and future plans released by the Utah Department of Transportation (UDOT) indicate that this will continue in the north and the far south of the state as well, due to the extremely rapid growth of Washington County and surrounding areas. In like manner, Las Vegas in Nevada has seen growth along I-15, and in all of the states that it currently serves, it has recently been or
680-568: The concurrent designations of I-515, US 93, and US 95 through Henderson as it passed the Sunset Station casino and Galleria at Sunset shopping mall. I-515 then turned north and intersected Tropicana Avenue (SR 593), Flamingo Road (SR 592), and the Boulder Highway (SR 582) as it approached Las Vegas. After entering the city of Las Vegas, the highway turned west and intersected Las Vegas Boulevard on
720-649: The Canadian border into the province of Alberta ; however, I-15 signage is present on Alberta Highway 4 southbound from Lethbridge to the Canadian border . I-15 was constructed along the route of US 91 . Once I-15 was relatively intact, US 91 was decommissioned, except for one part in Northern Utah ;/ Southern Idaho where I-15 instead followed the route of former US 191 . I-15 originally had two suffixed routes. In California, I-15 had an eastern branch bypassing San Bernardino , which
760-569: The I-515 designation was decommissioned in May 2024. The southern terminus of I-515 was at an interchange with I-11 , I-215 , US 93 , US 95 , and SR 564 in Henderson , a suburb of Las Vegas . The freeway continues south as I-11 towards Boulder City and the Hoover Dam on the former alignment of I-515. The six-lane freeway travels northwest from the interchange and carried
800-599: The United States. As a result, the route of I-15 has substantially increased in population and commuter traffic. This highway's southern terminus is in San Diego, California , at I-8 , although via SR 15 , a southern extension of the freeway, the route connects to I-5 just north of the Mexico–US border. The northern terminus is in Sweet Grass, Montana , at the Canada–US border, where it becomes Alberta Highway 4 . It
840-751: The designation of "Future Interstate 11", which included routing I-11 along existing I-515 between Railroad Pass and the I-215 Henderson Spaghetti Bowl interchange—AASHTO approved this request on May 29, 2014, with condition that it also be approved by the Federal Highway Administration . The Boulder City Bypass was completed in August ;2018. As a result, I-515 was shortened by 5.566 miles (8.958 km) to its current length of 14.444 mi (23.245 km). NDOT began replacing I-515 signs along
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#1732765902951880-605: The freeway. Many of these link distant power stations to the Los Angeles metropolitan area. The southern starting point of I-15 was in 1957 planned to be in San Bernardino , at the interchange with the San Bernardino Freeway (then US 70/US 99, now I-10 ). This was logical as I-15 was following the old alignment of the historic Route 66 which passed through San Bernardino. The segment
920-531: The length of I-515 was 20.010 miles (32.203 km). The I-515 designation was first approved by the American Association of State Highway and Transportation Officials (AASHTO) on July 12, 1976, from the I-15 interchange to the junction of US 93 and US 95 (at Boulder Highway, current exit 70). On December 7, 1984, AASHTO approved the southeasterly extension of the route to its former terminus near Boulder City. Even though
960-469: The north side of Downtown Las Vegas . I-515 ended at the Spaghetti Bowl , an interchange with I-15, while the roadway continues west as Oran K. Gragson Freeway (carrying US 95). Prior to the completion of the freeway, US 93 and US 95 originally followed Fremont Street/Boulder Highway from Downtown Las Vegas southeast through Henderson to Boulder City. Boulder Highway was signed as
1000-553: The north. Meanwhile, the old alignments of US 91 and US 66 follow the Mojave River from Victorville to Barstow along the National Trails Highway . At that point, I-15 follows the old route of US 91 exclusively as US 66 turned east toward Needles . For many parts of the highway, high-voltage powerlines , such as Path 46 and Path 27 , almost all originating from the Hoover Dam , follow
1040-577: The original interchange in San Bernardino). The segment that had been built from Devore to San Bernardino was retained as an Interstate, but was renumbered as I-215 . Note that during the construction of I-15's present alignment, and for some time afterward, I-215 was numbered as I-15E, and its actual mileage would begin at I-10. I-15 runs for a total of 287 miles (462 km) in California. I-15 begins in Primm and continues through Las Vegas along
1080-480: The population of Utah, 19 percent of the population of California, and more than 70 percent of the population of Nevada live in counties where I-15 is the primary Interstate Highway . Similarly, in California, I-15 is seeing more commuter traffic due to the growth of the Mojave Desert communities of Hesperia , Victorville , and Barstow . In Utah, I-15 has been under near-constant construction in
1120-696: The route number was approved prior to the highway's construction, I-515 was not consistently signed until after the freeway was completed down to its former southern terminus north of Railroad Pass in 1994. With the pending construction of the Boulder City Bypass introducing the I-11 designation to Nevada, the Nevada Department of Transportation (NDOT) sought to connect the new route to other Interstate Highways. NDOT submitted an application to AASHTO at their spring 2014 meeting to request
1160-448: The same term This disambiguation page lists articles associated with the same title formed as a letter–number combination. 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=I15&oldid=1166434180 " Category : Letter–number combination disambiguation pages Hidden categories: Short description
1200-465: The southern stretch with I-11 signs on March 17, 2019. The signing continued through April 26, 2019. The designation of future I-11 is planned to connect the Phoenix, Arizona , and Las Vegas metropolitan areas, with potential for future expansion northwest of Las Vegas to Reno in the northwestern part of the state. The former I-515 alignment, with a continuation northwest along US 95,
1240-625: The state, I-15 winds its way along the western edge of a nearly continuous range of mountains (the Wasatch Range in the northern half of the state). The only exceptions are north of Cove Fort and when it passes between Cedar City and St. George, known as the Black Ridge, a transition zone of drastic change in elevation and climate, an area where the eastern Great Basin , Colorado Plateau , and Mojave Desert converge. I-15 passes through Idaho for 196 miles (315 km). I-15 crosses
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1280-509: The state, which includes St. George , Cedar City , and eventually most of the major cities and suburbs along the Wasatch Front , including Provo , Orem , Sandy , Salt Lake City , Layton , and Ogden . Near Cove Fort , I-70 begins its journey eastward across the country. The Interstate merges with I-80 for about 3 miles (5 km) from South Salt Lake to just west of Downtown Salt Lake City and also merges with I-84 from Ogden to Tremonton . Along nearly its entire length through
1320-445: The states of California , Nevada , Arizona , Utah , Idaho , and Montana . The Interstate serves the cities of San Diego , San Bernardino , Las Vegas , Salt Lake City , Idaho Falls , and Great Falls . It also passes close to the urban areas of Los Angeles , Orange , and Riverside counties, California. The stretches of I-15 in Idaho, Utah, and Arizona have been designated as the "Veterans Memorial Highway". The southern end
1360-605: Was a 20.54-mile-long (33.06 km) spur route of I-15 in the US state of Nevada that ran from the junction of I-15, US 93 and US 95 (the Las Vegas Spaghetti Bowl Interchange) in Downtown approximately 20 miles (32 km) southeast to just north of Railroad Pass in southeastern Henderson . The freeway connected traffic headed from Boulder City and Henderson to Downtown Las Vegas via
1400-838: Was completed accordingly. In 1964, legislation was later passed to extend the Interstate to San Diego . Instead of extending the existing freeway from the I-10 interchange south, however, the California Department of Transportation drew a new segment in Devore that "branched" off of the original alignment and bypassed San Bernardino altogether. This segment's alignment is generally northeast to southwest for about 13 miles (21 km). Then, in Rancho Cucamonga , its directional alignment shifts to north–south where it eventually meets with I-10 (about 15 miles (24 km) west of
1440-459: Was completed southeast to Charleston Boulevard ( SR 159 ) in 1984, to Tropicana Avenue ( SR 593 ) in 1986, to Russell Road in 1988, to Lake Mead Parkway ( SR 564 ) (then known as Lake Mead Drive, SR 146 west and SR 147 east), in 1990, and finally to Railroad Pass just south of Boulder Highway in 1994 at an at-grade intersection with Paradise Hills Drive (which was eventually removed). With this extension of highway complete,
1480-522: Was decommissioned at that time. Beginning in 2022, several construction projects have been started or planned to improve the I-515 corridor as a whole. The projects include soundwall and retaining wall reconstruction, bridge rehabilitation, and interchange improvements. All the projects are expected to be started by 2027. Exits listed below reflect the maximum extent of I-515 prior to the southern portion being renumbered to I-11. Exits on I-515 were numbered according to US 95 mileposts.The entire route
1520-438: Was designated I-15E. I-15E was renumbered and is now I-215 . Present day routing of I-15 in California was originally given "I-15W" as its title while it was under construction (the original asphalt portions from Temescal Canyon to Ontario Avenue were dubbed I-15W on maps until 1974), but was never officially signed as such. In Idaho, I-15 had a western branch near Pocatello that connected I-15 and I-84 (then I-80N). This highway
1560-401: Was designated I-15W. It is now the western I-86 . Since the construction of I-15, California, Nevada, and Utah have consistently ranked in the fastest-growing areas of the United States. As a result, the route of I-15 has substantially increased in population and commuter traffic has increased the traffic burden on the freeway. Current population estimates are that more than 75 percent of
1600-539: Was one of three corridors under consideration to carry the I-11 designation through the Las Vegas Valley. On July 27, 2022, it was announced that the Nevada Department of Transportation had chosen the central corridor, following the former path of I-515 and US 95, as the preferred alternative for the alignment of I-11 through Las Vegas, and signage was put up in May 2024; the I-515 designation
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