Interstate 15 Branch Routes

Interstate 15 north of I-8 in San Diego Interstate 15 San Diego (Mission Valley), CA ↔ International Border – Sweetgrass, MT I-15 North / I-90 East at Interstate 115 in Butte, Montana Interstate 115 Montana Butte, MT ↔ Butte, MT I-15 North at Interstate 215 in Murietta, California Interstate 215 California Murrieta, CA ↔ San Bernardino, CA I-11/U.S. 93-95 North at Interstate 215 in Henderson, Nevada Interstate 215 Nevada Paradise, NV ↔ Henderson, NV I-15 South at Interstate 215 in North Salt Lake, Utah Interstate 215 Utah Park Terrace, UT I-15 North at Unsigned Interstate 315 in Great Falls, Montana Unsigned Interstate 315 Montana Great Falls, MT ↔ at Fox Farm Road – Great Falls, MT U.S. 95 South at the beginning of Former Interstate 515 in Las Vegas, Nevada Former Interstate 515 Nevada Henderson, NV ↔ Las Vegas, NV