California State Route 19 is a Sign State Highway located in the Los Angeles which is sporadically signed between California State Route 1 at Los Alamitos Traffic Circle in Long Beach north to Interstate 210 near Pasadena. Traditionally California State Route 19 followed Lakewood Boulevard and Rosemead Boulevard in the Long Beach-Pasadena corridor. Presently much of California State Route 19 has been relinquished from State Maintenance but remains signed in places. The current Legislative Definition of California State Route 19 is from the northern city limit of Lakewood north to Gardendale Street/Forest Street along the boundary of Bellflower/Downey. California State Route 19 is also partially signed over what is designated as California State Route 164. California State Route 164 is legislatively defined as Rosemead Boulevard near Pico Rivera north to South El Monte in the vicinity of Rush Street.
Featured above as the blog cover is California State Route 19 signage displayed approaching Los Alamitos Traffic Circle along northbound California State Route 1 in Long Beach. Below California State Route 19 can be seen on the 1963 Division of Highways Map prior to the 1964 State Highway Renumbering.
Part 1; the history of California State Route 19 and unsigned California State Route 164
During 1933 the legislative barriers preventing the Division of Highways from maintaining urban highways was removed. Subsequently numerous urban highways were added to the State Maintenance Inventory as new Legislative Routes. What would become California State Route 19 (CA 19) was added as Legislative Route Number 168 (LRN 168). The initial definition of LRN 168 was LRN 60 near Long Beach north to LRN 9 near Lamanda Park.
An early feature of LRN 168 to be completed was its southern terminus in Long Beach at Los Alamitos Traffic Circle. Los Alamitos Traffic Circle opened during 1934 and likely is the second such design constructed in California (the first being the Belmont Traffic Circle of US Route 99 in Fresno).
The initial run of Sign State Routes were announced in the August 1934 California Highways & Public Works. CA 19 was announced as running almost entirely concurrent to LRN 168 from CA 3/LRN 60 in Long Beach north to US Route 66/LRN 161 near Lamanda Park (US Route 99 would move to LRN 26 in September 1934).
The 1935 Division of Highways Maps of Los Angeles County provide detail as to the location and naming of the initial alignments of CA 19/LRN 168. On the southern segment insert CA 19/LRN 168 can be seen originating from Los Alamitos Traffic Circle in Long Beach northward on Bennett Avenue.