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 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 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.
U.S. Route 93 (US 93) is a major north–south 1,359-mile (2,187 km) U.S. Numbered Highway in the western United States, that connects U.S. Route 60 (US 60) in Wickenburg, Arizona with British Columbia Highway 93 at the Canadian border. The highway passes through Kingman, Arizona; Las Vegas, Nevada; Twin Falls, Idaho; and Missoula, Montana.
Interstate 515 (I-515) is a 20.54-mile-long (33.06 km) spur route of I-15 in the US state of Nevada that runs from the junction of I-11, I-215, and State Route 564 (SR 564) at the Spaghetti Bowl Interchange in Henderson to the junction of I-15, U.S. Route 93 (US 93), and US 95 at the Las Vegas Spaghetti Bowl Interchange in Downtown Las Vegas. The freeway connects traffic headed from Boulder City and Henderson to Downtown Las Vegas via a direct, high-speed route, and it runs concurrently with Interstate 11, US 93, and US 95 along its entire length.
Spaghetti junction is a nickname sometimes given to a complex or massively intertwined road traffic interchange that is said to resemble a plate of spaghetti. Such interchanges may incorporate a variety of interchange design elements in order to maximize connectivity.
Interstate 11 (I-11) is an Interstate Highway that currently runs for 22.845 miles (36.765 km) on a predominantly northwest–southeast alignment in the US state of Nevada, running concurrently with US Route 93 (US 93) between the Arizona state line and the north end of the Las Vegas urban area. The freeway is tentatively planned to run from Nogales, Arizona, to the vicinity of Reno, Nevada, generally following the current routes of I-19, I-10, US 93, and US 95. Planners anticipate widening two existing highway segments to carry future I-11: US 93 in Arizona from Wickenburg to the Nevada state line on the Mike O'Callaghan–Pat Tillman Memorial Bridge over the Colorado River, and US 95 in Nevada from the Las Vegas Valley to Tonopah. In 2023, officials began replacing Interstate 515 signs in Las Vegas with Interstate 11 signs, and adding I-11 signs on US 95 north of downtown Las Vegas. An exact alignment for I-11 has yet to be determined outside of these sections; a number of corridor alternatives, however, have been identified for further study and refinement. The building of I-11 in Arizona is also facing local opposition from conservation groups.
Interstate 195 (I-195) is an auxiliary Interstate Highway in the US state of Virginia. Known as the Beltline Expressway, the highway runs 3.24 miles (5.21 km) from State Route 195 (SR 195), a toll road that continues south into Downtown Richmond, north to I-64 and I-95 on the northern edge of Richmond. I-195 passes through the West End of Richmond and connects I-64 and I-95 with US Route 33 (US 33) and US 250, which follow Broad Street, and with SR 76, a toll road that links Richmond with the Southside of the metropolitan area.
Interstate 275 (I-275), located in Florida, is a 60-mile-long (97 km) auxiliary Interstate Highway serving the Tampa Bay area. Its southern terminus is at I-75 near Palmetto, where I-275 heads west towards the Sunshine Skyway Bridge crossing over Tampa Bay. From that point, I-275 passes through St. Petersburg before crossing Tampa Bay again on the Howard Frankland Bridge, then continues through the city of Tampa, where it connects to an interchange with I-4 in Downtown Tampa. After the interchange, I-275 passes north through the Tampa suburbs to its northern terminus at I-75 in Wesley Chapel.
Interstate 580 (I-580) is a 35.019-mile (56.358 km) auxiliary Interstate Highway in Western Nevada. It runs concurrently with US Route 395 (US 395) from an intersection with US 50 near the southern boundary of Carson City to the Reno Spaghetti Bowl interchange with I-80 in Reno. The freeway provides a high-speed direct route between Lake Tahoe and Carson City to Reno and I-80.
The Las Vegas Beltway is a 50-mile (80 km) beltway route circling three-quarters of the Las Vegas Valley in southern Nevada. The Las Vegas Beltway carries two numerical designations. 11.1 miles (17.9 km) of the highway, from its southern terminus at Interstate 11 (I-11) / I-515 / U.S. Route 93 (US 93) / US 95 in Henderson west and northwest to I-15, is signed as Interstate 215 (I-215) and maintained by the Nevada Department of Transportation. Clark County Route 215 (CC 215) composes the remaining approximately 38.9 miles (62.6 km) of this semi-circumferential highway, with the county's Department of Public Works responsible for all construction and maintenance. The beltway is a freeway up to Interstate Highway standards in its entirety.
State Route 146 (SR 146) is a 6.673-mile-long (10.739 km) major east–west state highway in the southern part of the U.S. state of Nevada. It begins at the exit 27 interchange on Interstate 15 (I-15) south of the Las Vegas Strip and ends at the Pecos Road interchange on I-215 in Henderson. The highway is currently known as Saint Rose Parkway, but was known as Lake Mead Drive prior to 2001.
Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running in a general east–west compass direction for 111.57 miles (179.55 km) in Connecticut, from the New York state line to the Rhode Island state line. I-95 from Greenwich to East Lyme is part of the Connecticut Turnpike, during which it passes through the major cities of Stamford, Bridgeport, and New Haven. After leaving the turnpike in East Lyme, I-95 is known as the Jewish War Veterans Memorial Highway and passes through New London, Groton, and Mystic, before exiting the state through North Stonington at the Rhode Island border.
Alemany Maze is the name given to the interchange between the James Lick Freeway and the John F. Foran Freeway in the city of San Francisco. Alternative names for this highway feature are Alemany Interchange and The Spaghetti Bowl.
State Route 582 (SR 582) is a major 15.392-mile-long (24.771 km) highway in the Las Vegas Valley. The highway is the former route of U.S. Route 93 (US 93) and US 95 before they were moved to the current freeway alignment shared with Interstate 11 (I-11) and Interstate 515 (I-515). Known primarily as Boulder Highway, the route connects Downtown Las Vegas with Henderson and Boulder City to the southeast.
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 most of the state's population centers, including St. George and those comprising the Wasatch Front: Provo–Orem, Salt Lake City, and Ogden–Clearfield. It is Utah's primary and only north–south interstate highway, as the vast majority of the state's population lives along its corridor; the Logan metropolitan area is the state's only Metropolitan Statistical Area through which I-15 does not pass. In 1998, the Utah State Legislature designated Utah's entire portion of the road 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. 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.
U.S. Route 95 is a major U.S. highway traversing the U.S. state of Nevada from north to south directly through Las Vegas and providing connections to both Carson City and Reno. US 95 is cosigned with Interstate 80 for 95 miles (153 km) between a junction in Trinity and Winnemucca before heading north into Oregon at McDermitt. At 646.71 miles (1,040.78 km), it is the longest highway in Nevada.
State Route 613, better known as Summerlin Parkway, is a freeway in the western portion of the city of Las Vegas, Nevada, connecting Clark County Route 215 to Interstate 11/U.S. Route 95 and serving the master planned community of Summerlin.
The Harry Reid Airport Connector (RAC) is a limited-access roadway system located in Paradise, an unincorporated town in the Las Vegas Valley, Clark County, Nevada, United States. Composed of State Route 171, the Airport Tunnel and arterial streets, the airport connector provides vehicular access to the passenger terminals at Harry Reid International Airport. Despite being completely owned by Clark County, the first 0.685 miles (1.102 km) of the Harry Reid Airport Connector is maintained by NDOT as unsigned SR 171, while the remaining section is maintained by Clark County.
The Centennial Bowl is a freeway interchange in Las Vegas, in the U.S. state of Nevada, in the Centennial Hills neighborhood. It serves Interstate 11 (I-11)/U.S. Route 95 (US 95) and Clark County Route 215. After the full completion of the interchange in 2023, the beltway was upgraded to freeway standards in its entirety.
