has legally been State Route 164 since the 1964 renumbering, but has always been signed as SR 19. Original plans for SR 164 took it southeast to Interstate 605 from the present transition between SR 164 and SR 19, and it was originally planned as the Rio Hondo Freeway. Many segments of SR 19 have since been relinquished to the cities that they run through. Caltrans relinquished Long Beach's portion of SR 19 to the city on January 27, 1999, and Downey's segment of SR 19 was relinquished to the city on July 3, 2001. However, the segment in Pico Rivera was not relinquished to that city until June 22, 2004. On October 27, 2006, the northern portion of SR 164 that went through an unincorporated area of the county from Callita Street to I-210 was relinquished to the county. In April 2008, the section of SR 164 through Temple City was relinquished to that city. On April 9, 2012, the section of SR 19 through Lakewood was relinquished to that city. In 2017, the relinquishment process in Bellflower has started. Major intersections See also References External links California @ AARoads.com - State Route 19 Caltrans: Route 19 highway conditions California Highways: SR 19 019 Roads in Los Angeles County, California Streets in Pasadena, California Streets in the San Gabriel Valley State Route 019 State Route 19 State Route 19 State Route 19 State Route 19 State Route 19 State Route 19 State Route 19 State Route 19 State Route 19