California Streets and Highways Code
Route 72 is from Route 39 to Route 605 in Whittier, except as follows:
(a) Route 72 shall cease to be a state highway when Route 90 freeway is completed from Route 5 to Route 39.
(b) The relinquished former portions of Route 72 within the City of Montebello, the City of Pico Rivera, and the County of Los Angeles are not state highways and are not eligible for adoption under Section 81. For the relinquished former portions of Route 72, the Cities of Montebello and Pico Rivera and the County of Los Angeles shall maintain within their respective jurisdictions signs directing motorists to the continuation of Route