Does anyone know the exact date US 66 was extended to Santa Monica? Until the McClure Tunnel opened on February 1, 1936, SR 3/US 101A stayed on Lincoln and hit the coast at Santa Monica Canyon (West Channel Road). So if US 66 was designated before this, it likely ended at Santa Monica and Lincoln.
Cahighways.org has the change being approved on June, 17th 1935 with it becoming effective on on January 1st, 1936:
http://www.cahighways.org/065-072.htmlFor the sake of relevancy here is the direct quote from site:
PROPOSED EXTENSION OF US 66 DISTRICT 711 TO SANTA MONICA
"Beginning at the intersection of North Broadway and Sunset Boulevard, the junction of US 66, US 99, and US 101, in the City of Los Angeles; thence, northwesterly over Sunset Boulevard (State Highway Route 2) and US 101 to Santa Monica Boulevard; thence, westerly over Santa Monica Boulevard (a city street) to Myra Avenue, the junction of State Highway 162 [LRN 162] and Sign Route (2) [Route 2]; thence, continuing westerly over Santa Monica Boulevard (State Highway Route 162 [LRN 162]) and Sign Route (2) [Route 2] through the Cities of Los Angeles and Beverly Hills to the intersection of Santa Monica Boulevard and Lincoln Boulevard, in the City of Santa Monica; thence, southerly along Lincoln Boulevard to the terminus at Pennsylvania Avenue, a total distance of approximately 13.00 miles.
Remember, in 1935, Olympic Boulevard had been approved as LRN 173, but had not been constructed. This road was later marked as Route 26. If, however one was to draw a line from Pennsylvania Ave. to the junction of LRN 162 (Route 2 and US 66) with LRN 60 (Route 1 and US 101A) at Lincoln Blvd., the points would match. The highway department obviously used Pennsylvania Ave. as the point of reference since Olympic Blvd. did not yet exist."
So it looks like US 66 just went to where Olympic was going to be at....so much for a temporary measure.