Interstate 15 in California


Get started San Diego
End Mountain Pass
Length 287 mi
Length 462 km
San Diego: 6-26

  • 6B Mission Valley Fwy
  • 7 Friars Road
  • 8 Aero Drive
  • 9 Balboa Avenue
  • 10 Clairemont Mesa Boulevard
  • 11 San Clemente Canyon Fwy
  • 12 Cabrillo Fwy
  • 13 Miramar Way
  • 14 Miramar Road
  • 15 Carroll Canyon Road
  • 16 Mira Mesa Boulevard
  • 17 Mercy Road
  • 18 Poway Road
  • 19 Ted Williams Fwy
  • 21 Carmel Mountain Road
  • 22 Camino del Norte
  • 23 Bernardo Center Drive
  • 24 Rancho Bernardo Road
  • 26 Pomerado Road
  • Escondido: 27-37
  • 27 Via Rancho Parkway
  • 28 Center City Parkway
  • 29 Felicita Road
  • 30 9th Avenue
  • 31 Valley Parkway
  • 32 Packard Fwy
  • 33 El Norte Parkway
  • 34 Center City Parkway
  • 37 Deer Springs Road
  • 41 Gopher Canyon Road
  • 43 Old Hwy 395
  • 46 Pala
  • 51 Fallbrook
  • 54 Rainbow Valley Boulevard
  • Temecula: 58-61
  • 58 Temecula
  • 59 Rancho California Road
  • 61 Winchester Road
  • 63 Escondido Fwy
  • 64 Murrieta Hot Springs Road
  • 65 California Oaks Road
  • 68 Clinton Keith Road
  • 69 Baxter Road
  • 71 Bundy Canyon Road
  • 73 Lake Elsinore
  • 75 Main Street
  • 77 Central Avenue
  • 78 Nichols Road
  • 81 Lake Street
  • 85 Indian Truck Trail
  • 88 Temescal Canyon Road
  • 90 Weirick Road
  • 91 Cajalco Road
  • 92 El Cerrito Road
  • Corona: 93-97
  • 93 Ontario Avenue
  • 95 Magnolia Avenue
  • 96 Riverside Fwy
  • 97 Hidden Valley Parkway
  • 98 2nd Street
  • 100 6th Street
  • 103 Limonite Avenue
  • 105 Cantu-Galleano Ranch Road
  • 106 Pomona Fwy
  • Ontario: 108-109
  • 108 Jurupa Street
  • 109 San Bernardino Fwy
  • Rancho Cucamonga: 110-119
  • 110 4th Street
  • 112 Foothill Boulevard
  • 113 Baseline Road
  • 115 Foothill Fwy
  • 116 Summit Avenue
  • 119 Sierra Avenue
  • San Bernardino: 122-124
  • 122 Glen Helen Parkway
  • 123 Barstow Fwy
  • 124 Kenwood Avenue
  • 129 Cleghorn Road
  • 131 Silverwood Lake
  • 138 Oak Hill Road
  • 140 Ranchero Road
  • 141
  • 143 Hesperia
  • 147 Lucerne Valley
  • 150 Palmdale Road
  • 151A Roy Rogers Drive
  • 151B Mojave Drive
  • 153 Victorville
  • 154 Stoddard Wells Road
  • 161 Apple Valley
  • 165 Wild Wash Road
  • 169 Hodge Road
  • Barstow: 175-186
  • 175 Outlet Center Drive
  • 179 Barstow-Bakersfield Fwy
  • 181 L Street
  • 183 Barstow Road
  • 184A Needles Fwy
  • 184B East Main Street
  • 186 Old Highway 58
  • 189 Fort Irwin Road
  • 191 Ghost Town Road
  • 194 Calico Road
  • 196 Yermo Road
  • 198 Minneola Road
  • 206 Harvard Road
  • 213 Field Road
  • 221 Afton Road
  • 230 Basin Road
  • 233 Rasor Road
  • 239 Zzyzx Road
  • 245 Baker Boulevard
  • 246 Baker → Death Valley
  • 248 Baker Boulevard
  • 259 Halloran Springs
  • 264 Halloran Summit Road
  • 272 Cima
  • 281 Bailey Road
  • 286 Nipton
  • 291 Yates Well Road


Interstate 15 or I -15 is an Interstate Highway in the U.S. state of California. The freeway forms a north-south route in the south of the state, connecting the metropolitan areas of San Diego and Los Angeles with Las Vegas in Nevada. The highway begins in downtown San Diego and continues through the Inland Empire from Los Angeles through the mountains and the Mojave Desert to the Nevada border. Large parts of the route are urban, particularly in San Diego and the Inland Empire, as well as in the rapidly developing satellite towns surrounding these cities. The route in California is 462 kilometers long.

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Travel directions

The express lanes of I-15 in Escondido.

San Diego

I-15 is a continuation of State Route 15 and begins at the interchange with Interstate 8. I-15 then has 2×4 lanes and passes the Qualcomm Stadium. I-15 connects two large office parks and the Marine Corps Air Station Miramar. In the north of San Diego there is an interchange with State Route 52, after which traffic from State Route 163 and I-15 has 6+2+2+6 lanes with express lanes in the median strip. In the northern suburb of Poway follows an interchange with State Route 56. The main lanes gradually narrow from 6 to 4 lanes in each direction, and the express lanes terminate at the interchange with State Route 78in Escondido. North of Escondido, I-15 has 2×4 lanes and leads through a more mountainous, less built-up area.

Inland Empire

The conurbations of San Diego and Los Angeles have almost merged and there is barely 25 kilometers of semi-rural land between Escondido and the Inland Empire. The Inland Empire is defined as the area east of Los Angeles, consisting of an endless row of suburbs and is growing very fast, absorbing a significant part of the population growth in this region, because Los Angeles itself is already full. The first suburb is Temecula, 100 miles from downtown Los Angeles. In fact, San Diego is closer than Los Angeles. At Murrieta, Interstate 215 exits toward Riverside and San Diego. I-15 continues straight through the smaller suburbs between San Bernardino and Pomona. The highway is called the Corona Freeway hereand runs through the Temescal Valley to Corona, a large suburb. In Corona, one crosses State Route 91, the Riverside Freeway. From here, a lot of traffic turns to Los Angeles, which is still 100 kilometers away. The passage through the Corona region has express lanes.

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After this one crosses one of the largest industrial areas of Los Angeles, east of Ontario, which measures 10 by 10 kilometers. It also crosses State Route 60, the Pomona Freeway, which leads to Riverside and Moreno Valley to the east, and Ontario, Pomona, and Los Angeles to the west. A short time later they cross Interstate 10 via a stack junction. This is the main east-west highway from Los Angeles to Phoenix. You pass the Ontario Mills, a large shopping mall. You drive past the towns Rancho Cucamonga and Fontana. The highway here is called the Ontario Freeway. At Devore, Interstate 215. joinsback into and out of the urban jungle. After this one has to cross the San Gabriel Mountains, which is done by way of El Cajon Summit at 1298 meters altitude.

Mojave Desert

I-15 at the interchange with I-40 in Barstow.

After the El Cajon Summit, there is an exurban area around Hesperia, Apple Valley and Victorville. This is an important overflow area for Los Angeles, which is packed, and the Inland Empire, which fills up quickly. At Hesperia, US 395 exits, a major north-south route in eastern California and leads to the Sierra Nevada and Reno in western Nevada. After Victorville you leave the densely populated world for good and you enter the Mojave Desert, a dry desert with high mountains. The highway here is called the Barstow Freeway, named after the town of Barstow. Barstow is a fairly important interchange as this is where Interstate 40. begins, which runs to the east. One passes the ghost town of Calico, and comes through more and more remote area, the next hamlet is 100 kilometers away.

The highway runs through barren deserts with long straights in the route. One passes over and along a number of mountain ridges and along Mojave National Preserve, a nature park. Occasionally there are exits that lead to nowhere into the desert. Just before Baker you pass perhaps the most famous exit on a motorway, namely Zzyxx Road. At Baker one can access State Route 127to drive to Death Valley. However, the distances are quite long, it is another 180 kilometers to Zabriskie Point in Death Valley. Most striking in the desert is the 41 meter high thermometer in Baker. Again the highway has long straight lines, sometimes of tens of kilometers through the barren desert. At Mountain Pass you reach the highest point of I-15 in California at 1442 meters. From the last exit, it’s 14 kilometers straight to the Nevada border, with another oasis along the way. Here Interstate 15 in Nevada continues to Las Vegas.

Interstate 15 in California