Interstate 8

Interstate Highway in California and Arizona in the United States

Interstate 8 or I-8 is an Interstate Highway that runs from Interstate 10 near Casa Grande, Arizona to San Diego, California. The route is 348.25 miles (560.45 km) long.[1]

Interstate 8 marker

Interstate 8

I-8 highlighted in red
Route information
Maintained by Caltrans and ADOT
Length350.34 mi[1] (563.82 km)
Major junctions
West endSunset Cliffs Boulevard / Nimitz Boulevard in San Diego, CA
Major intersections
East end I-10 in Casa Grande, AZ
CountryUnited States
StatesCalifornia, Arizona
CountiesCA: San Diego, Imperial
AZ: Yuma, Maricopa, Pinal
Highway system
  • Arizona State Highway System
  • SR 7 CA SR 9

    SR 989 AZ I-10


    1. 1.0 1.1 Federal Highway Administration (2002-10-31). "FHWA Route Log and Finder List: Table 1". Retrieved 2007-03-28.

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