Interstate 5 Freeway

Interstate 5 in California is a 796.77-mile highway that runs from the Mexican border at the San Ysidro Port of Entry in San Diego to the Oregon state line south of the Medford-Ashland metropolitan area. It is the longest interstate in California and accounts for more than half of I-5's total length. The highway passes through several major cities, including San Diego, Los Angeles, Stockton, Sacramento, and Redding, and is known colloquially as "the 5" in Southern California and "5" in Northern California.learn more on wikipedia