A vast network of interconnected freeways in the megaregion of Southern California serves a population of over 23 million people. The Master Plan of Metropolitan Los Angeles Freeways was adopted by the Regional Planning Commission in 1947 and construction began in the early 1950s.[1] The plan hit opposition and funding limitations in the 1970s, and by 2004, only some 61% of the original planned network had been completed.
- ^ "California Highways: Telling a Story through Highway and Planning Maps: Southern California Freeway Development (Part 1 - 1940s)". www.cahighways.org. July 13, 1936. Retrieved July 26, 2022.