|Veterans Memorial Highway|
I-15 highlighted in red
|Maintained by ADOT|
|Length||29.43 mi (47.36 km)|
Interstate 15 (I-15) is an Interstate Highway, running from San Diego, California, United States, to the Canada–US border, through Mohave County in northwest Arizona. Despite being isolated from the rest of Arizona, in the remote Arizona Strip, and short in length at 29.43 miles (47.36 km), it remains notable for its scenic passage through the Virgin River Gorge. The highway heads in a northeasterly direction from the Nevada border northeast of Mesquite, Nevada, to the Utah border southwest of St. George, Utah.
The Canada–United States border, officially known as the International Boundary, is the longest international border in the world between two countries. It is shared between Canada and the United States, the second- and fourth/third largest countries by area, respectively. The terrestrial boundary is 8,891 kilometres (5,525 mi) long, of which 2,475 kilometres (1,538 mi) is Canada's border with Alaska. Eight Canadian provinces and territories, and thirteen U.S. states are located along the border.
Mohave County is in the northwestern corner of the U.S. state of Arizona. As of the 2010 census, its population was 200,186. The county seat is Kingman, and the largest city is Lake Havasu City.
Arizona is a state in the southwestern region of the United States. It is also part of the Western and the Mountain states. It is the sixth largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona shares the Four Corners region with Utah, Colorado, and New Mexico; its other neighboring states are Nevada and California to the west and the Mexican states of Sonora and Baja California to the south and southwest.
The south portion of I-15's route was built close to the alignment of the old U.S. Route 91 (US 91), but the northern section, through the Virgin River Gorge, was built along roadless terrain. The southern section of the highway was complete and open in the early 1960s, but the gorge section was inaccessible until 1973. When it opened, the Virgin River Gorge passage was the most expensive section of rural Interstate per mile.
The highway is signed and designated the Veterans Memorial Highway,a designation which continues into Utah. Traffic volume along the Arizona section of I-15 is approximately 23,000 vehicles per day. The highway is also a part of the CANAMEX Corridor, a trade corridor in North America linking Edmonton, Alberta in Canada and Mexico City.
Utah is a state in the western United States. It became the 45th state admitted to the U.S. on January 4, 1896. Utah is the 13th-largest by area, 31st-most-populous, and 10th-least-densely populated of the 50 United States. Utah has a population of more than 3 million according to the Census estimate for July 1, 2016. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which contains approximately 2.5 million people; and Washington County in Southern Utah, with over 160,000 residents. Utah is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west. It also touches a corner of New Mexico in the southeast.
The CANAMEX corridor is a series of improvements to freeways and other transportation infrastructure linking Canada to Mexico through the United States. The corridor was established under the North American Free Trade Agreement. Currently the corridor is defined by a series of highways. However, the corridor is also proposed for use by railroads and fiber optic telecommunications infrastructure.
Edmonton is the capital city of the Canadian province of Alberta. Edmonton is on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Alberta's central region. The city anchors the north end of what Statistics Canada defines as the "Calgary–Edmonton Corridor".
The highway enters the state in Mohave County northeast of Mesquite and Las Vegas, Nevada, paralleling the old US 91 heading northeast on an alignment north of the Virgin River. I-15 parallels the Virgin River for its entire length in Arizona, but the terrain abruptly becomes more rugged at mile 13, where the Virgin River Gorge begins.The first interchange is exit 8 at Littlefield, where old US 91 turns north to avoid the gorge. I-15 crosses the river for the first time just beyond Littlefield, and soon passes another interchange serving local roads eastwards. This exit, exit 9, is a right-in/right-out design with frontage roads, constructed after the initial opening. Access under I-15 is provided just south of the ramps.
Mesquite is a U.S. city in Clark County, Nevada, adjacent to the Arizona state line and 80 miles (130 km) northeast of Las Vegas on Interstate 15. As of July 1, 2017, the United States Census estimates that the city had a population of 18,541. The city is located in the Virgin River valley adjacent to the Virgin Mountains in the northeastern part of the Mojave Desert. It is home to a growing retirement community, as well as several casino resorts and golf courses.
The Virgin River is a tributary of the Colorado River in the U.S. states of Utah, Nevada, and Arizona. The river is about 162 miles (261 km) long. It was designated Utah's first wild and scenic river in 2009, during the centennial celebration of Zion National Park.
The Virgin River Gorge, located between St. George, Utah, and Beaver Dam, Arizona, is a long canyon that has been carved out by the Virgin River in northwest Arizona. The Virgin River rises on the Colorado Plateau and created the topography of both Zion National Park and the Virgin River Gorge. The Gorge connects the southwestern rim of the Colorado Plateau and the northeastern part of the Mojave Desert.
Beyond exit 9, I-15 enters the Virgin River Gorge, first passing through "The Narrows". Here, the gorge features limestone cliffs that are as high as 500 feet (150 m) above the highway. Several pulloffs allow access to these cliffs. Within the canyon, through which it ascends northbound and descends southbound, five bridges cross the river. The highway generally follows the winding course of the river, but several rock cuts bypass bends.
Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). A closely related rock is dolostone, which contains a high percentage of the mineral dolomite, CaMg(CO3)2. In fact, in old USGS publications, dolostone was referred to as magnesian limestone, a term now reserved for magnesium-deficient dolostones or magnesium-rich limestones.
The canyon opens up slightly at the Cedar Pocket interchange (exit 18), allowing for a rest area. This rest area was turned over to the federal Bureau of Land Management in 2002 which maintains the nearby Virgin River Gorge Recreation Area.The rest area was demolished in 2009. I-15 continues to parallel the Virgin River, but begins to deviate more. Trees here include tamarix, ash, cottonwoods, willows and Joshua trees. Wildflowers such as globemallow, marigold, and sand verbena dot the route in springtime. At mile 22.5, the highway crosses the Virgin River for the final time, continuing east along the smaller Black Rock Gulch before then turning slightly northeast into a flatter area. The final interchange (exit 27) provides local access.
A rest area is a public facility, located next to a large thoroughfare such as a highway, expressway, or freeway, at which drivers and passengers can rest, eat, or refuel without exiting onto secondary roads. Other names include: motorway service area (UK), Services (UK), travel plaza, rest stop, service area, service station, rest and service area (RSA), resto, service plaza, lay-by, and service centre. Facilities may include park-like areas, fuel stations, public toilets, water fountains, restaurants, and dump and fill stations for recreational vehicles.
The Bureau of Land Management (BLM) is an agency within the United States Department of the Interior that administers more than 247.3 million acres (1,001,000 km2) of public lands in the United States which constitutes one eighth of the landmass of the country. President Harry S. Truman created the BLM in 1946 by combining two existing agencies: the General Land Office and the Grazing Service. The agency manages the federal government's nearly 700 million acres (2,800,000 km2) of subsurface mineral estate located beneath federal, state and private lands severed from their surface rights by the Homestead Act of 1862. Most BLM public lands are located in these 12 western states: Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington and Wyoming.
The genus Tamarix is composed of about 50–60 species of flowering plants in the family Tamaricaceae, native to drier areas of Eurasia and Africa. The generic name originated in Latin and may refer to the Tamaris River in Hispania Tarraconensis (Spain).
A weigh station/port of entry formerly served both sides of the road near mile 28 before the Utah state line.The weigh station/port of entry are now combined into a joint Arizona/Utah facility just north of the state line staffed by the Arizona Department of Transportation (DOT) Motor Vehicle Division and Utah DOT Motor Carrier Division. I-15 continues on into Utah providing access to St. George as well as Salt Lake City.
The Old Spanish Trail from Southern California had two routes through northwestern Arizona, splitting at Littlefield; one went north towards central Utah, and the other went northeast through the Virgin River Gorge, straddling the state line to the Four Corners area.When the Arrowhead Trail was marked in the 1920s, and U.S. Route 91 in 1926, automobile travelers between Nevada and Utah followed the northerly routing, turning east in Utah to reach St. George.
When the Interstates were planned, federal authorities decided to save 12 miles (19 km) over US 91 and pass through the Virgin River Gorge to take advantage of its scenery and lower grades for trucks. Construction was completed first, in the early 1960s, on the portion between Nevada and the gorge. The bridges over Big Bend Wash were completed in 1962. The bridge over the Virgin River near Littlefield was completed by 1964. By 1965, the overpass over Black Rock Road (northwards) was finally complete.
Construction through the gorge was slower and much more difficult, and the segment could not fully open until December 14, 1973.To help quicken construction, the state of Utah loaned a portion of their federal highway funds to Arizona. Even though the highway is of little importance to the transportation needs of Arizona, as it does not link any Arizona communities, it does serve as a vital link between Salt Lake City and Las Vegas and Los Angeles to the southwest. Despite extra funding, however, challenges remained. Flash flooding and quicksand in the gorge repeatedly caused problems, with equipment and materials apparently disappearing overnight. Worse, the project was to claim a life, when in October 1969, a helicopter performing reconnaissance on the gorge crashed due to wind, killing the pilot. To help navigate the gorge's rugged and unforgiving terrain, a special piece of equipment called a swamp buggy had to be brought from Texas. Even with this help, the route still demanded construction of four bridges over Virgin River. The westernmost bridge and the bridge carrying the northbound lanes at the third bridge location from the west were completed in 1972. By 1973, all five bridges were finally complete.
Even before its opening, it was promoted as the most scenic highway in the state; a 1988 article in Arizona Highways said that the project "enhanced rather than distracted from Nature's handiwork". The Virgin River was rechanneled 12 times in what was the most expensive rural freeway in the country, at the price of approximately $10 million per mile ($6,200,000/km) or $49 million per mile ($30,000,000/km) in 2007 dollars.
The entire route is in Mohave County.
|||0.00||0.00||Continuation into Nevada|
|Beaver Dam||8.61||13.86||8||Beaver Dam, Littlefield||Former US 91|
|9.63||15.50||9||Desert Springs||Formerly signed as Farm Road|
|Black Rock||27.49||44.24||27||Black Rock Road|
|||29.43||47.36||Continuation into Utah|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
Interstate 15 (I-15) is a major Interstate Highway in the western United States. I-15 begins near the Mexico–US border in San Diego County and stretches north to Alberta, Canada, passing through the states of California, Nevada, Arizona, Utah, Idaho, and Montana. The interstate serves the cities of San Diego, Las Vegas, St. George, Provo, Salt Lake City, Ogden, Pocatello, Idaho Falls, Butte, Helena, and Great Falls. It also passes close to the urban areas of Orange County, California and Los Angeles County, California. The stretches of I-15 in Idaho, Utah, and Arizona have been designated as the "Veterans Memorial Highway". The southern end is at a junction with I-8 and State Route 15 in San Diego, and the northern end is at a connection with Alberta Highway 4 at the Sweetgrass–Coutts Border Crossing.
Interstate 19 (I-19) is a north–south Interstate Highway located entirely within the U.S. state of Arizona. I-19 travels from Nogales, roughly 300 feet (91 m) from the Mexican border, to Tucson, at I-10. The highway also travels through the cities of Rio Rico, Green Valley, and Sahuarita.
U.S. Route 93 (US 93) is a major north–south United States highway in the western United States. The southern terminus is at US 60 in Wickenburg, Arizona. The northern terminus is at the Canada–US border north of Eureka in Lincoln County, Montana, where the roadway continues into Roosville, British Columbia, as Highway 93. Major cities that US 93 travels through include: Las Vegas, Nevada; Twin Falls, Idaho; Missoula, Montana; and Kalispell, Montana.
U.S. Route 91 (US 91) is a north–south United States highway. The highway currently serves as a connection between the Cache Valley area of Utah and Idaho to the Salt Lake City and Idaho Falls population centers. Prior to the mid-1970s, US 91 was an international commerce route from Long Beach, California to the Canada–US border north of Sweetgrass, Montana. US 91 was routed on the main streets of most of the communities it served, including Las Vegas Boulevard in Las Vegas and State Street in Salt Lake City. From Los Angeles to Salt Lake, the route was built along the corridor of the Arrowhead Trail. US 91 has been largely replaced by Interstate 15. A portion of the highway's former route in California is currently State Route 91.
U.S. Route 191 is a spur of U.S. Route 91 that has two branches. The southern branch runs for 1,465 miles (2,358 km) from Douglas, Arizona on the Mexican border to the southern part of Yellowstone National Park. The northern branch runs for 440 miles (710 km) from the northern part of Yellowstone National Park to Loring, Montana, at the Canada–US border. Unnumbered roads within Yellowstone National Park connect the two branches. The highway passes through the states of Arizona, Utah, Wyoming, and Montana.
Littlefield is an unincorporated community and census-designated place in Mohave County located in the Arizona Strip region of the U.S. state of Arizona. As of the 2010 census, its population was 308. It lies along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada. Littlefield is located in the 86432 zip code.
The Arizona Strip is the part of Arizona lying north of the Colorado River. The difficulty of crossing the Grand Canyon causes this region to have more physical and cultural connections with southern Utah and Nevada than with the rest of Arizona. The largest settlements in the Strip are Colorado City and Fredonia.
State Route 9 (SR-9) is a state highway in southern Utah, serving Zion National Park. It starts at the western terminus at exit 16 on I-15, passing through Zion National Park, and ending at the eastern junction with US-89. The entire length of the highway has been designated the Zion Park Scenic Byway. There is a fee to travel through Zion National Park, but the Zion-Mt. Carmel Highway is open to private vehicles year-round. A separate fee is required for vehicles 7'10" wide and/or 11'4" tall or larger. This fee pays for a park employee to stop traffic from the other side of the Zion - Mt. Carmel Tunnel to allow the larger vehicles to pass through. There is a smaller tunnel in Zion National Park that does not require an escort. Commercial vehicles are prohibited from using SR-9 and are directed to use SR-20 instead.
Beaver Dam is an unincorporated community in Mohave County located in the extreme northwestern corner of the U.S. state of Arizona, settled in 1863. It is located along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada. Beaver Dam is located in the 86432 zip code, which had a population of 3,933 as of the 2010 census.
In the U.S. state of Arizona, U.S. Route 93 is a U.S. Highway that begins in Wickenburg and heads north to the Nevada border at the Mike O'Callaghan – Pat Tillman Memorial Bridge.
Interstate 15 (I-15) runs north–south in the U.S. state of Utah through the southwestern and central portions of the state, passing through many of the population centers of the state, including St. George, Provo, Salt Lake City, and Ogden, the latter three being part of the urban area known as the Wasatch Front. It is the primary north–south highway in Utah, as the majority of the state's population lives along its corridor. The only Metropolitan Statistical Area in Utah not connected by I-15 is the Logan Utah-Idaho Metropolitan Statistical Area. In 1998, the Utah Legislature designated the entire length within Utah as the Veterans Memorial Highway.
Interstate 15 (I-15) is an Interstate Highway in the U.S. state of Nevada that begins in Primm, continues through Las Vegas and it crosses the border with Arizona in Mesquite. Within the state, the freeway runs entirely in Clark County. Many motorists use I-15 to visit Las Vegas, as it is the only primary Interstate Highway in the city. The highway was built along the corridor of the older U.S. Route 91 (US 91) and Arrowhead Trail, eventually replacing both of these roads.
In the U.S. state of Utah, U.S. Route 89 (US-89) is a long north–south state highway spanning more than 502 miles (807.891 km) through the central part of the state. Between Provo and Brigham City, US-89 serves as a local road, paralleling Interstate 15, but the portions from Arizona north to Provo and Brigham City northeast to Wyoming serve separate corridors. The former provides access to several national parks and Arizona, and the latter connects I-15 with Logan, the state's only Metropolitan Statistical Area not on the Interstate.
U.S. Route 191 (US-191) is a major north–south state highway through the eastern part of the U.S. state of Utah. The present alignment of US-191, which stretches from Mexico to Canada, was created in 1981 through Utah. Previously the route had entered northern Utah, ending at US-91 in Brigham City, but with the completion of I-15 it was truncated to Yellowstone National Park and re-extended on a completely different alignment. In addition to a large portion of US-163, this extension absorbed several state routes: SR-33, most of SR-44, and SR-260.
In the U.S. state of Nevada, U.S. Route 93 is a major United States Highway traversing the eastern edge of the state. The highway connects the Las Vegas area to the Great Basin National Park, and provides further connections to Ely and Wells. US 93 also provides the majority of the most direct connection from the major metropolitan areas of Las Vegas and Phoenix to the Boise, Idaho Metropolitan Area with a final connection to Boise via Interstate 84 from Twin Falls, Idaho.
Twenty-four business routes of Interstate 15 exist. Former routes also exist.
Business routes of Interstate 80 exist in four states; California, Nevada, Utah, and Wyoming.
Scenic, Arizona is a census-designated place in Mohave County in extreme northwestern Arizona. As of the 2010 census, its population was 1,643. Scenic is recognized as a distinct area by Mohave County planners and documents which reference its existence and is shown on official maps of Mohave County.
The Beaver Dam Mountains are a 23 miles (37 km) long mountain range located mostly in extreme southwest Washington County, Utah, west of St. George, with the south of the range extending into the Arizona Strip.