When did ROOSEVELT HIGHWAY in California get renamed the PACIFIC COAST HIGHWAY (PCH)?”
The highway was named after President Theodore Roosevelt. In 1964, this was resigned as Route 1. == Even today, this section is not officially part of the Pacific Coast Highway. Quoting Wikipedia: Although it does not border the coastline, State Route 1 retains the PCH name as it continues westerly through the Los Angeles districts of Wilmington and Harbor City, and the cities of Lomita and Torrance. It then turns northerly through the cities of Redondo Beach and Hermosa Beach. Upon entering Manhattan Beach, it becomes Sepulveda Boulevard, and continues through El Segundo and Los Angeles International Airport, directly passing underneath two runways. Route 1 then turns northwesterly shifting to Lincoln Boulevard before turning to the southwest, first as Olympic Boulevard, then as the approach to Interstate 10 in Santa Monica. Route 1 rejoins the scenic coastline in Santa Monica and continues in a westerly direction; along the Santa Monica coastline it is known locally as Palisades Beac