Route 107 begins at State Route 1 in south Torrance and runs north along Hawthorne Boulevard in its entirety. (Hawthorne Boulevard continues south of Route 1 as Los Angeles County Route N-7.) The route is a principal arterial surface road in its entirety with grade crossings and maintains a wide right-of-way, often having as many as eight lanes and maintaining a 40 mph (60 km/h) speed limit. Route 107 goes through light and medium industrial areas and office towers. It also comes in contact with two malls: The South Bay Galleria and the Del Amo Fashion Center. It only met one other route along the way: State Route 91 at Artesia Boulevard, which has since been deleted.
In 1964, Route 107 was defined to run past Interstate 405 along Hawthorne Boulevard, which renamed itself La Brea Avenue upon entering Inglewood at Century Boulevard, then turned west on Centinela Avenue to meet Interstate 405 again in Culver City. In 1965, the portion from Route 405 in Lawndale to Route 405 in Culver City was deleted. It was to have been upgraded to a freeway and was tentatively named the "Torrance Freeway."
Until 1998, Route 107 continued further north to Interstate 405. In 1998, state law was changed to allow the relinquishment of Route 107 to the City of Lawndale. In 2003, the legislative definition was updated to eliminate the portion in Lawndale. The route currently ends at Redondo Beach Boulevard at the city limits of Lawndale.
Major intersections
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Los Angeles County.
^ abcCalifornia Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original(XLS file) on September 5, 2015. Retrieved June 30, 2015.
^Portions of this route have been relinquished to or are otherwise maintained by local or other governments, and are not included in the length.
^"Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
^Federal Highway Administration (March 25, 2015). National Highway System: Los Angeles, CA(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 1, 2017.
^Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
^California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.