Interstate 15 South - Arizona to Garnet

Interstate 15 south enters the Mesquite city limits, Clark County and the Silver State just north of Hillside Drive (Old U.S. 91).
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Business Loop I-15 follows Sandhill Boulevard south from the diamond interchange at Exit 122. The route makes an unmarked turn onto Mesquite Boulevard west through the Mesquite business district.
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Sandhill Boulevard extends south from Exit 122 to W Mesquite Boulevard while Pioneer Boulevard runs parallel to I-15 west to Lower Flat Top Drive.
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I-15 passes under N Grapevine Road one mile ahead of W Mesquite Boulevard and Falcon Ridge Parkway (Exit 120).
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The locally maintained business loop follows W Mesquite Boulevard from downtown to the exchange with I-15 ahead.
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Interstate 15 advances southwest to Lower Flat Top Drive (Exit 118) next. Exit 118 opened to traffic July 2016.
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SR 170 ties into Interstate 15 one mile ahead at a diamond interchange (Exit 112).
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The state route loops back east to Bunkerville and Mesquite along a 11.405 mile long course.
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Interstate 15 continues toward the western Mormon Mountains 107 miles from the California state line.
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Joshua trees populate Mormon Mesa to the north of Interstate 15 and south of Moapa Peak and the Mormon Mountains.
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Carp Elgin Road extends north from Exit 100 across ranch lands and the Mormon Mountains into Lincoln County.
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SR 169 extends 18.598 miles north from Lake Mead Recreational Area to meet I-15 at a diamond interchange (Exit 93) in one mile.
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SR 169 travels the length of Moapa Valley, passing through Logandale and Overton en route to Lake Mead Recreational Area and Valley of Fire State Park.
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Glendale Boulevard connects I-15 to SR 168 west at Exit 91 in one mile.
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SR 168 branches 24.758 miles northwest from Glendale and Moapa to U.S. 93 near Coyote Springs.
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Glendale Boulevard travels west to the beginning of SR 168. The state route represents an original alignment of U.S. 93.
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Los Angeles debuts at 336 miles out as I-15 angles southwest from Glendale to the Las Vegas metro area.
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Beginning operation in 1965, the 612 MW coal-fired Reid Gardner Generating Station retired from service in 2017.
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A folded diamond interchange (Exit 84) joins I-15 with Hidden Valley Road north to SR 168.
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Valley of Fire Highway leads east from I-15 to Valley of Fire State Park one half mile ahead.
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Established by the state legislature in 1935, Valley of Fire State Park encompasses over 40,000 acres of bright red Aztec sandstone outcrops.
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Valley of Fire Highway ends 23.5 miles to the east at Northshore Road within Lake Mead Recreational Area.
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A Union Pacific Railroad line runs alongside Interstate 15 as the freeway advances southwest to Las Vegas.
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U.S. 93 (Great Basin Highway) ties into Interstate 15 at the Garnet Interchange (Exit 64) south from Hidden Valley between the Arrow Canyon and Las Vegas Ranges.
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U.S. 93 travels east from the Pahranagat Valley to Caliente and the north to Lincoln County seat of Pioche.
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Construction through December 2018 updated the exchange between I-15 and U.S. 93 into a modified diverging diamond interchange.
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Great Basin National Park lies far to the north off U.S. 6/50 east from where U.S. 93 overlaps with the two routes west into Ely.
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While U.S. 93 north heads to Caliente and Ely, U.S. 93 south follows I-15 to I-11/U.S. 93 near Downtown Las Vegas.
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