[I-15]

Current route in Arizona: St. George, UT; Littlefield, AZ; Mesquite, NV
Since: 1969
Length: 29 mi
Current route nationally: San Diego, CA to Canadian border at Sweetgrass, MT

Junctions: None!


The "forgotten" Arizona Interstate. Hardly anyone will list this one when asked what Interstates run through Arizona. It crosses a very remote area of the Arizona Strip, northwest of the Grand Canyon. I-15 is not reachable by paved road from the rest of the state. I-15 replaced US 91 as the route from Las Vegas to St. George, but took a different alignment. Instead of curving north at Littlefield, I-15 climbs through the Virgin River Gorge, winding along the canyon over the river. Some of the bridges straddling the river are over 800 feet long, and nearly touch the canyon walls on either side of the highway. It's a spectacular sight, but you have to enjoy it at 55mph, as no stopping is permitted.

[Virgin River bridge]
A 1972 picture showing one of the bridges shortly after it was constructed. (Photo: ADOT)

[I-15 in Virgin River Canyon] [I-15 in Vrigin River Canyon] [I-15 in Virgin River Canyon]
Present-day (2004) view of the canyon.

Click an attraction name to visit it

I-15 EXIT LIST
EXIT NORTHBOUND EXITS
Read down
SOUTHBOUND EXITS
Read up
0 Nevada State Line
0 SPEED LIMIT 75 SPEED LIMIT 75
8 Littlefield
Beaver Dam
Littlefield
Beaver Dam
9 Farm Rd Farm Rd
11 SPEED LIMIT 65
12 SPEED LIMIT 55 SPEED LIMIT 75
18 Cedar Pocket Cedar Pocket
Virgin River Canyon
Recreation Area
Virgin River Canyon
Recreation Area
23 SPEED LIMIT 75 SPEED LIMIT 55
CURVES
MOUNTAIN GRADES
NEXT 11 MILES
24 SPEED LIMIT 65
27 Black Rock Rd Black Rock Rd
29 SPEED LIMIT 75 SPEED LIMIT 75
29 Utah State Line

Special thanks to Daniel Stober for the original exit list

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Last updated 7/24/2004