The Imperial Highway is a west-east thoroughfare in the counties of Los Angeles, Orange, Riverside, San Diego, and Imperial in California. The main portion of the existing route begins at Vista Del Mar in Los Angeles near the Los Angeles International Airport and ends at the Anaheim–Orange city line at Via Escola where it becomes Cannon Street. Historically, the Imperial Highway extended from Vista Del Mar to Calexico, where a portion of the highway still exists. The original route was replaced with other highways, leading the older portions of the Imperial Highway to fall out of use. Route The total length of the Greater Los Angeles portion of the Imperial Highway is approximately , of which run through Orange County and through Los Angeles County. Between SR 91 and SR 39, Imperial Highway is signed as State Route 90. A de facto freeway portion of the route in Yorba Linda is also known as the Richard M. Nixon Parkway. The portion in Los Angeles County between Lakewood Boulevard and Valley View Avenue is located about one mile north of, and runs parallel to, Rosecrans Avenue. Cities Starting from Cannon Street & Via Escola in Orange, going east to west Cannon Street becomes Imperial Highway upon entering Anaheim. The highway then passes through the cities and communities of Anaheim Hills, Yorba Linda, Placentia, Brea, Fullerton, La Habra, La Mirada, Santa Fe Springs (some sections in La Mirada and Santa Fe Springs are next to unincorporated LA County), Norwalk, Downey, South Gate, Lynwood, Los Angeles (Watts, and South LA – a portion after South LA is in unincorporated LA County), Inglewood, Hawthorne, El Segundo (southside of street only), and Westchester (part of Los Angeles on the northside). Imperial Highway ends at Dockweiler Beach on Vista Del Mar near Playa Del Rey, just past LAX. Freeways Along its route, Imperial Highway crosses over or under these freeways from west to east: Interstate 105 Interstate 405 Interstate 110 Interstate 710 Interstate 605 Interstate 5 California State Route 57 California State Route 91 Interstate 8 Transportation Metro Local lines 120 and formerly 625 run through Imperial Highway, as well as Norwalk Transit line 4; Metro line 625 ran between Pershing Drive and La Cienega Boulevard. Metro line 120 runs between Aviation Boulevard and Norwalk Station, and Norwalk line 4 between Norwalk Station and Beach Boulevard. Imperial intersects with the Metro A and C Lines at