Interstate 405 (California)

Interstate 405
San Diego Freeway
I-405 highlighted in red
Route information
Auxiliary route of I-5
Maintained by Caltrans
Length	72.415 mi[1] (116.541 km)
Existed	1964–present
NHS	Entire route
Major junctions
South end	I-5 in Irvine
Major intersections	SR 133 in Irvine SR 55 / SR 73 in Costa Mesa I-605 / SR 22 in Seal Beach I-710 in Long Beach I-110 in Carson I-105 near LAX I-10 in West Los Angeles SR 2 in Westwood US 101 in Sherman Oaks SR 118 in Mission Hills
North end	I-5 near San Fernando
Location
Country	United States
State	California
Counties	Orange, Los Angeles
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← US 395 US 466 →

Interstate 405 (I-405) is an Interstate Highway in the Orange and Los Angeles counties of California. It is a bypass route of the Interstate 5. It goes from the I-5 near San Fernando, through the west side of Los Angeles and Long Beach before ending back at the Interstate 5 near Irvine. It is the busiest highway in the United States, mainly because it is the only highway in the west side of Los Angeles that goes from north to south. It also passes important places such as Los Angeles International Airport and the ports of Los Angeles and Long Beach. It also forms a western bypass around Center Los Angeles.^[2][3][4]

1. ↑ Cite error: The named reference trucklist was used but no text was provided for refs named (see the help page).
2. ↑ "U.S. Highways With the Most Traffic". Time For Kids. Archived from the original on August 11, 2011.
3. ↑ Santa Monica College Corsair News Article Archived August 15, 2007, at the Wayback Machine
4. ↑ "Most Travelled Urban Highways Average Annual Daily Traffic". Federal Highway Administration. July 27, 2010. Retrieved January 26, 2013.