Back Interstate 8 German Interstate 8 English Interestatal 8 Spanish Interstate 8 Basque بزرگراه میانایالتی ۸ Persian Interstate 8 French Interstate 8 Hungarian Interstate 8 Italian 州間高速道路8号線 Japanese 주간고속도로 제8호선 Korean
Interstate 8 | |||||||||
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 I-8 highlighted in red | |||||||||
| Route information | |||||||||
| Maintained by Caltrans and ADOT | |||||||||
| Length | 350.34 mi[1] (563.82 km) | ||||||||
| Existed | 1964–present | ||||||||
| NHS | Entire route | ||||||||
| Major junctions | |||||||||
| West end | Sunset Cliffs Boulevard / Nimitz Boulevard in San Diego, CA | ||||||||
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| East end |  I-10 in Casa Grande, AZ | ||||||||
| Location | |||||||||
| Country | United States | ||||||||
| States | California, Arizona | ||||||||
| Counties | CA: San Diego, Imperial AZ: Yuma, Maricopa, Pinal | ||||||||
| Highway system | |||||||||
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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]
- ↑ 1.0 1.1 Federal Highway Administration (2002-10-31). "FHWA Route Log and Finder List: Table 1". Retrieved 2007-03-28.