Interstate 15 South - Las Vegas to California

Interstate 15 heads south from the systems interchange (Exit 34) with I-215/CC-215 (Bruce Woodbury Beltway) into southern reaches of the Las Vegas metro area.
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State Route 160 (Blue Diamond Road) loops along an 80.297 mile course west and north from I-15 at Exit 33 to Pahrump and U.S. 95 in Nye County.
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While SR 159 branches north from Blue Diamond Road to Red Rock Canyon National Conservation Area, SR 372 angles westward from Pahrump and SR 160 to Death Valley National Park in California.
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SR 160 initially follows Blue Diamond Road from Las Vegas Boulevard southwest through the exchange with I-15 at Exit 33 into Enterprise.
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Beyond the metro area, SR 160 winds through the Sandstone Bluffs en route to Pahrump and back north to U.S. 95 west of Mercury.
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Interstate 15 advances south to Silverado Ranch Boulevard at Exit 31 next.
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Silverado Ranch Boulevard joins I-15 with the Silverado Ranch and Southfork neighborhoods of Henderson.
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Extending south from I-11/U.S. 93-95 near Downtown Las Vegas, the express lanes along I-15 were lengthened beyond Silverado Ranch Boulevard to SR 146 at Exit 27 by late 2025.
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Interstate 15 meets Starr Avenue at Exit 29 ahead followed by SR 146 (St. Rose Parkway) at Exit 27.
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Exit 29 opened September 2019, providing more connectivity between I-15 and the Southern Highlands neighborhood.
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The HOV lane along Interstate 15 south ends 0.75 miles ahead at the SPUI with SR 146 (St. Rose Parkway) east to Henderson.
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Exit 27 to SR 146/Southern Highlands Parkway represents the last Las Vegas metro area interchange along I-15 south.
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SR 146 angles 6.622 miles northeast along St. Rose Parkway to I-215 (Bruce Woodbury Beltway) opposite S Pecos Road. The state route previously extended further east to Henderson but was supplanted by the beltway.
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Southern Highlands Parkway ties into the west side of the exchange (Exit 27) with Interstate 15.
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Primm is located 27 miles ahead along Interstate 15 south at the California border.
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Located near Jean Dry Lake, the Seven Magic Mountains desert artwork display is found along Las Vegas Boulevard 7.8 miles from Sloan Road / Exit 25. The exhibition was created by Swiss artist Ugo Rondinone and opened for public viewing in 2016.
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Interstate 15 remains a six lane freeway to Primm.
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The State Line Hills rise to the south where Interstate 15 advances toward California.
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State Route 161 travels 7.277 miles northwest to Goodsprings from forthcoming Exit 12.
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The town of Jean consists of a post office, truck stop, correctional institute, and a shuttered hotel and casino. Prior to March 2020, Terrible's Hotel and Casino occupied the structure. As of January 2024, an industrial park was slated to occupy the land of the former hotel and casino.
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Named after prospector and cattleman Joseph Good, Goodsprings began as a mining outpost in 1868. The mining settlement peaked by the start of WWI.
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The community of Sandy Valley is located 19.7 miles to the west of the diamond interchange at Exit 12 along the California border.
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The ensuing 11 mile exit less stretch leads Interstate 15 south to Primm.
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Casino hotels line either side of Interstate 15 at the diamond interchange (Exit 1) with E Primm Boulevard one mile ahead.
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Known as State Line until 1996, Primm got its name from the original land owners who occupied 400 acres surrounding the interchange. The first casino opened in 1970.
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Interstate 15 reduces to four overall lanes as the freeway enters California from Primm en route to Barstow. The reduction in travel lanes southbound typically results in weekend backups from those traveling between Las Vegas and the Golden State.
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