California State Route 187 is a five mile State Highway aligned Venice Boulevard located almost entirely within the city of Los Angeles. California State Route 187 begins at Interstate 10 Exit 7A and terminates at California State Route 1. California State Route 187 contains a deleted segment which once also included what is now Moomat Ahiko Way as part of the grade separation of Colorado Avenue in Santa Monica near Santa Monica Pier.
Part 1; the history of California State Route 187
During 1933 the State removed the barriers which prevented the Division of Highways from maintaining mileage in incorporated cities. This measure led to a large influx of urban highways being added to the State Highway inventory during 1933. What would become California State Route 187 was added to the State Highway System as part of 1933 Legislative Chapter 767 as Legislative Route Number 163 (LRN 163). The original definition of LRN 163 was as follows:
"Continue Roosevelt Highway from the point where it intersects with Santa Monica Canyon Road at and it Santa Monica to a point where, if so continued, it would intersect Windward Avenue, in Venice, Los Angeles, California. Said road is now commonly known and designated as Ocean Front and parallels the Pacific Ocean a short distance therefrom."
The 1934 Division of Highways Map provides a simpler route description for LRN 163 which would be codified during 1935.