- Length
- 1,433.52 mi (2,307.03 km)
- Existed
- August 14, 1957 –present
- Nhs
- Entire route
- South end
- I-8 / SR 15 in San Diego, CA
- Major intersections
- I-10 in Ontario, CA I-40 in Barstow, CA I-11 / US 93 / US 95 in Las Vegas, NV I-70 near Cove Fort, UT I-80 in Salt Lake City, UT I-84 from Riverdale, UT to Tremonton, UT I-86 in Chubbuck, ID I-90 near Butte, MT
- North end
- Highway 4 at the Canadian border in Sweet Grass, MT
- Country
- United States
- States
- California , Nevada , Arizona , Utah , Idaho , Montana