.svg) Interstate 15 | ||||
|---|---|---|---|---|
| Las Vegas Freeway | ||||
 I-15 highlighted in red | ||||
| Route information | ||||
| Maintained byNDOT | ||||
| Length | 123.762 mi[1] (199.176 km) | |||
| Existed | June 29, 1956–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end |  I-15 at theCalifornia state line | |||
| Major intersections |
| |||
| North end |  I-15 at theArizona state line | |||
| Location | ||||
| Country | United States | |||
| State | Nevada | |||
| County | Clark | |||
| Highway system | ||||
| ||||
| ||||
Interstate 15 (I-15), designated theLas Vegas Freeway,[1] is anInterstate Highway in the US state ofNevada that begins inPrimm, continues throughLas Vegas and it crosses the border with Arizona inMesquite. Within the state, the freeway runs entirely inClark County. The highway was built along the corridor of the olderUS Route 91 (US 91) andArrowhead Trail, eventually replacing both of these roads.
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Motorists inCalifornia begin a long descent throughIvanpah Valley andIvanpah Dry Lake. I-15 crosses theNevada state line at the first exit,Primm. Once I-15 leaves Primm, the route travels north through the desert with few services. The highway then enters the Las Vegas urban area upon passing theState Route 146 (SR 146, Saint Rose Parkway) interchange.
From Silverado Ranch Boulevard toI-11 andUS 95, I-15 hasHOV lanes that are currently enforced by bothLVMPD (aka Metro) andNSP (formerly NHP).[2][3]
The Interstate meetsI-215 at the Southern Beltway Interchange, which provides access toHenderson andHarry Reid International Airport. Originally, this interchange was termedSon of Spaghetti Bowl by theLas Vegas Review-Journal when it was built.[citation needed]
_in_Las_Vegas%2c_Nevada.jpg)
I-15 travels along the west side of theLas Vegas Strip corridor and just west of downtown Las Vegas just before its junction withI-11 and US 95 (the "Spaghetti Bowl" interchange). Then, the Interstate entersNorth Las Vegas and continues to run roughly parallel toLas Vegas Boulevard (old US 91) as it leaves the Las Vegas urban limits near the northern junction with theClark County 215 beltway.[4]
Once I-15 leaves North Las Vegas, the freeway travels northeast and crosses theMuddy River atGlendale and then climbs up onto theMormon Mesa. AtMesquite, the freeway then crosses theArizona state line and cuts through the extreme northwestern corner of Arizona through theVirgin River Gorge before enteringUtah.
 State Route 6 | |
|---|---|
| Location | California state line–Arizona state line |
| Existed | c. 1919–November 11, 1926 |
 U.S. Route 91 | |
|---|---|
| Location | California state line–Arizona state line |
| Existed | November 11, 1926–June 25, 1974 |
The general location of the I-15 corridor through Nevada can be traced as far back as the early 1900s. Regular automobile travel through southern Nevada was established by 1914 along theArrowhead Trail, a road connectingLos Angeles andSalt Lake City.[5] In 1919, the Nevada Legislature amended its newly adopted highway law to add SR 6, which was described as "Commencing at the Arizona line near Mesquite and running southwesterly over what is now known as the Arrow Head [sic] trail through Las Vegas to Jean, Nevada."[6] Two years later, the route was revised to pass through Las Vegas and head "via Jean or Goodsprings to a junction with the California state highway system."[7]
US 91 was later proposed as part of the original 1925U.S. Highway System plan. As originally proposed, US 91 would have followed SR 6 southwest from Mesquite to downtown Las Vegas, where it would then turn southeast alongSR 5 to California viaSearchlight.[citation needed] The revised 1926 plan had proposed US 91 follow SR 6 through Las Vegas and Jean to the California state line.[citation needed] Nevada's 1927 official highway map reflects the routing of the final 1926 plan; however, a few maps from the era indicate the original proposal.[8][9]
US 91 / SR 6 began at Primm and followed theLos Angeles Highway toward Las Vegas. Within the city limits, it ran along Fifth Street (nowLas Vegas Boulevard) through downtown and into North Las Vegas, where it departed from 5th at Main Street. Exiting the Las Vegas area to the northeast, US 91 became theSalt Lake Highway and then headed towardApex andGlendale. The highway then curved east-northeast before following present-daySR 170 throughRiverside andBunkerville into Mesquite. US 91 was routed through that city on Mesquite Boulevard, Sandhill Boulevard and Fairview Avenue before crossing the Arizona state line. By 1929, the alignment of US 91 / SR 6 was graded throughout much of the state, a distance of 129.5 miles (208.4 km).[10]
The route eventually gained two other highway overlaps.US 466 was christened in 1934, and was routedconcurrently along US 91 from California to downtown Las Vegas before heading southeast toHoover Dam (the route was deleted in 1971).[11] Also, in 1936,US 93 was extended from its 1932 southern terminus at Glendale, over US 91 to downtown Las Vegas on its way to Hoover Dam.[12]
A new alignment of US 91 was completed in 1955. This bypassed both Bunkerville and Mesquite to the northwest, along what would become the future path of I-15.[13] The original alignment through Bunkerville is now SR 170.
The passage of theFederal Aid Highway Act of 1956 quickly brought upgrades to the US 91 corridor. The first section of the newly designated I-15 opened by 1960. This stretch extended from the California state line to just north ofSloan.[14] In 1963, the new freeway reached the south end of theLas Vegas Valley at Blue Diamond Road, and more than 20 miles (32 km) south of Glendale was also finished.[15] By 1967, I-15 had been constructed along the entire length of US 91 except through parts of Las Vegas and near Mesquite.[16]
The final sections of I-15 to be completed were in North Las Vegas and near the Arizona state line.[17] Both of these sections were completed in 1974. The US 91 designation, which had remained on its original alignment during the construction of the Interstate, was made redundant by the new freeway and was removed on June 25, 1974.[18]
Between Las Vegas and the California state line, theNevada Department of Transportation (NDOT) addedcall boxes at one-mile (1.6 km) intervals in the mid-2000s, for motorists with vehicle problems and without cell phone service. This was done as part of a larger project that expanded this portion of the freeway to three travel lanes in each direction to coordinate with a similar effort in California.
In August 2011, I-15 in southern Las Vegas was substantially expanded. This involved adding between 30 and 85% more capacity and involved the use of theBig Stan drill rig.[19]
Due to heaviest traffic, there are plans by theCalifornia Department of Transportation (Caltrans) andNDOT to widen I-15 in both directions from both Bear Valley Road atHesperia–Victorville city line andI-40 inBarstow to Sloan Road inEnterprise.[20][21][22]
In 2020,Brightline signed a 50-year lease for use of the I-15 right-of-way between Victor Valley and the Nevada state line for use in theirBrightline Westhigh-speed rail service.[23][24]
The entire route is inClark County.
| Location | mi[25][26] | km | Exit | Destinations | Notes | |
|---|---|---|---|---|---|---|
| Primm | 0.000 | 0.000 |  I-15 south –San Bernardino,Los Angeles | Continuation into California; formerUS 91 south/US 466 west | ||
| 0.39 | 0.63 | 1 | Primm (Primm Boulevard) | |||
| Jean | 12.63 | 20.33 | 12 |   SR 161 west (Goodsprings Road) –Jean,Goodsprings | ||
| Enterprise | 25.52 | 41.07 | 25 | Sloan Road –Sloan | Proposed interchange upgrade for Via Inspirada access; formerSR 739 east[27] | |
| 27.84 | 44.80 | 27 |   SR 146 east (Saint Rose Parkway) / Southern Highlands Parkway –Henderson, Lake Mead | Southern end ofHOV lane | ||
| 29.37 | 47.27 | 29 | Starr Avenue | |||
| 30.39 | 48.91 | 30 | Cactus Avenue | |||
| 31.36 | 50.47 | 31 | Silverado Ranch Boulevard | |||
| 33.55 | 53.99 | 33 |  SR 160 (Blue Diamond Road) –Pahrump | |||
| 34.85 | 56.09 | 34 |      I-215 east /CC 215 west /Las Vegas Boulevard –Harry Reid International Airport,Henderson | Northbound exit is part of exit 33; southbound exit to CC 215 west is part of exit 36; future I-215 west; I-215 exit 12 | ||
| Paradise | 36.39 | 58.56 | 36 | Russell Road | Signed as exit 35 northbound; northbound also includes exit to Frank Sinatra Drive; former SR 594; servesAllegiant Stadium | |
| 37.40 | 60.19 | 37 | Tropicana Avenue (SR 593) | Signed as exit 36 northbound; northbound also includes exit to Frank Sinatra Drive; servesT-Mobile Arena | ||
| 37.90 | 60.99 | ♦ | Harmon Avenue | HOV access only; northbound exit and southbound entrance | ||
| 38.35 | 61.72 | 38 | Flamingo Road (SR 592 west) | Signed as exits 38A (west) and 38B (east) southbound | ||
| 39.16 | 63.02 | 39 |  Spring Mountain Road | Northbound ramp also includes exit toDesert Inn Road, Highland Drive, and Western Avenue; former SR 591; servesSunrise Hospital & Medical Center | ||
| Las Vegas | 40.55 | 65.26 | 40 | Sahara Avenue | Former SR 589; serves Sunrise Hospital & Medical Center | |
| 41.47 | 66.74 | ♦ | Neon Gateway (Western Avenue) | HOV access only | ||
| 41.75 | 67.19 | 41 |  SR 159 (Charleston Boulevard) | Northbound ramps also include access to Alta Drive, Bonneville Avenue, and Grand Central Parkway; servesUniversity Medical Center of Southern Nevada andValley Hospital Medical Center | ||
| 42.89 | 69.02 | ♦ |     I-11 north /US 95 north | Spaghetti Bowl; HOV access only; northbound exit and southbound entrance; northern end of HOV lane | ||
| 42 |   I-11 /US 93 south /US 95 /Martin L. King Boulevard – Downtown Las Vegas,Phoenix,Reno | Spaghetti Bowl; southern end of US 93 concurrency; signed as exits 42A (north) and 42B (south) northbound; I-11 exit 37; formerI-515 south | ||||
| 43.47– 43.60 | 69.96– 70.17 | 43 | D Street, City Parkway, Washington Avenue (SR 578 east) | Signed as exit 44 southbound | ||
| North Las Vegas | 44.72 | 71.97 | 45 | Lake Mead Boulevard (SR 147 east) | ServesNorth Vista Hospital | |
| 46.43 | 74.72 | 46 | Cheyenne Avenue (SR 574) | |||
| 48.41 | 77.91 | 48 | Craig Road (SR 573) | ServesMike O'Callaghan Military Medical Center | ||
| 50.13 | 80.68 | 50 | Lamb Boulevard (SR 610 south) | |||
| 52.00 | 83.69 | 52 | CC 215 west / Tropical Parkway | Signed as exits 52A (CC 215 west) and 52B (Tropical Parkway) northbound[28] future I-215 west | ||
| 53.62 | 86.29 | 54 | Speedway Boulevard, Hollywood Boulevard | Serves Mike O'Callaghan Military Medical Center andLas Vegas Motor Speedway | ||
| 58.14 | 93.57 | 58 |  SR 604 south (Las Vegas Boulevard) –Apex,Nellis AFB | Former US 91/US 93 | ||
| 64.29 | 103.46 | 64 | US 93 north (Great Basin Highway) –Ely | Northern end of US 93 concurrency;Diverging diamond interchange[29][30] | ||
| Crystal–Moapa River Indian Reservation line | 75.67 | 121.78 | 75 | Valley of Fire,Lake Mead (Valley of Fire Highway) | ||
| Moapa River Indian Reservation | 80.76 | 129.97 | 80 | Ute | ||
| | 84.54 | 136.05 | 84 | Byron | ||
| | 88.68 | 142.72 | 88 | Hidden Valley (Hidden Valley Road) | ||
| Glendale–Moapa line | 90.84 | 146.19 | 90 |  SR 168 west (Glendale–Moapa Road) –Glendale,Moapa | Northbound exit and southbound entrance; SR 168 west was formerly part of US 93 north | |
| 91.61 | 147.43 | 91 | Glendale,Moapa (Glendale Boulevard, Lewis Ranch Road) | No southbound entrance | ||
| Moapa Valley | 93.89 | 151.10 | 93 |  SR 169 south (Moapa Valley Boulevard) –Logandale,Overton | ||
| | 100.43 | 161.63 | 100 | Carp,Elgin (Carp–Elgin Road) | ||
| Mesquite | 112.01 | 180.26 | 112 |  SR 170 east (Riverside Road) –Riverside,Bunkerville | SR 170 east was formerly part of US 91 north | |
| 118.14 | 190.13 | 118 | Lower Flat Top Drive | |||
| 120.34 | 193.67 | 120 | Falcon Ridge Parkway, Mesquite Boulevard | Dumbbell interchange; Mesquite Boulevard was formerI-15 Bus. north/SR 144 north; serves Mesa View Regional Hospital | ||
| 122.90 | 197.79 | 122 | Pioneer Boulevard, Sandhill Boulevard | Sandhill Boulevard was formerI-15 Bus. south/SR 144 south | ||
| 123.762 | 199.176 | I-15 north (Veterans Memorial Highway) –Salt Lake City | Continuation into Arizona | |||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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 Interstate 15 | ||
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