Interstate 5

highway in California, Oregon, and Washington in the United States

Interstate 5 (sometimes called I-5, or in Southern California, The 5) is a 1,381 miles (2,223 km) long[1] Interstate Highway in the states of California, Oregon, and Washington. The road goes from Mexican Federal Highway 1 at the United States-Mexican border to British Columbia Highway 99 at the United States-Canadian border. It is the main interstate highway of the West Coast. Nearly 60% of its length is in California.

Interstate 5 marker

Interstate 5

I-5 highlighted in red
Route information
Length1,381.29 mi[1] (2,222.97 km)
HistoryDesignated in 1956
Completed in 1979
NHSEntire route
Major junctions
South end Fed. 1 at the Mexican border at San Ysidro, CA
Major intersections
North end Hwy 99 at the Canada–US border at Blaine, WA
CountryUnited States
StatesCalifornia, Oregon, Washington
Highway system

Cities along the highway



  1. 1.0 1.1 "Table 1 - Main Routes - FHWA Route Log and Finder List - Interstate Highway System - National Highway System - Planning - FHWA". U.S. Department of Transportation. 6 May 2019. Retrieved 23 February 2021.

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