One set of tractor brakes, original clutch after 1,300,000 k ( 807,000 miles) She mainly ran Interstate 5 from Vancouver BC to all points Southern California and Arizona. ~~~~~~~~~~~~****************~~~~~~~~~~~~ INTERSTATE 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. Its odd number indicates that it is a north-south highway. Its southern terminus is at the international border between the United States and Mexico in the San Diego community of San Ysidro, California (Map). Its northern terminus is at the international border between the United States and Canada at the Peace Arch in Blaine, Washington (Map). This highway links the majority of the metropolitan areas in California (San Diego, Los Angeles, and Sacramento), Oregon (Medford, Eugene, Salem, and Portland), and Washington (Tacoma, Seattle, Everett, Mount Vernon, Bellingham).