Interstate 405

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Interstate 405

Routing

Interstate 405 is the San Diego Freeway, starting at Interstate 5/Golden State Freeway in northern Los Angeles and paralleling the coast via the vicinity of Santa Monica, Los Angeles International Airport, Long Beach, and Huntington Beach. The freeway returns to Interstate 5 near the former El Toro Marine Corps Station in Irvine. Interstate 405 is arguably the busiest freeway on the West Coast, with traffic a concern at any time during the day or night.

Naming

For its entire length in Orange and Los Angeles Counties, Interstate 405 is designated as the San Diego Freeway.

History

During its construction through west Los Angeles near Santa Monica and Los Angeles International Airport (LAX), the San Diego Freeway was planned as part of former California 7. With the advent of the national Interstate Highway System, the San Diego Freeway was designated as Interstate 405 from Irvine to the San Fernando Valley.

Interstate 405 Guide

Scenes Pertaining to Interstate 405
This freeway entrance shield assembly is posted from Exit 7 (Jamboree Boulevard) onto northbound Interstate 405 in Irvine. Photo taken 09/22/00.
This Interstate 405 "bubble shield" trailblazer was used for a detour routing in Long Beach along southbound California 1 for a time around 2000. Photo taken 09/22/00.

Back to U.S. 395 Return to the California Gateway Continue to Former Interstate 480

Page Updated November 28, 2009.