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Interstate 8 facts for kids

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Interstate 8 marker

Interstate 8
I-8 highlighted in red
Route information
Maintained by Caltrans and ADOT
Length 350.34 mi (563.82 km)
Existed 1964–present
Major junctions
West end Sunset Cliffs Boulevard / Nimitz Boulevard in San Diego, CA
East end I-10 in Casa Grande, AZ
States: California, Arizona
Counties: CA: San Diego, Imperial
AZ: Yuma, Maricopa, Pinal
Highway system
Main route of the Interstate Highway System
Main • Auxiliary • Business State highways in California(list • pre-1964)
History • Unconstructed • Deleted • Freeway • ScenicState routes in Arizona
Unconstructed • Former
SR 7 CA SR 9

SR 989 AZ I-10

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.

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