What is Interstate 405 (California)?
{{Infobox road |country = |state = CA |type = I |route = 405 |alternate_name = San Diego Freeway |section = 615 |map_notes = I-405 highlighted in red |length_mi = 72.415 |length_ref = <ref name=trucklist/> |established = 1964 |direction_a = South |terminus_a = {{jct|state=CA|I|5}} in [[Irvine, California|Irvine]] |junction = {{plainlist |*{{Jct|state=CA|SR|133}} in Irvine *{{Jct|state=CA|SR|55|SR|73}} in [[Costa Mesa, California|Costa Mesa]] *{{Jct|state=CA|I|605|SR|22}} in [[Seal Beach, California|Seal Beach]] *{{jct|state=CA|I|710}} in [[Long Beach, California|Long Beach]] *{{jct|state=CA|I|110}} in [[Carson, California|Carson]] *{{Jct|state=CA|I|105}} near [[Los Angeles International Airport|LAX]] *{{jct|state=CA|I|10}} in [[West Los Angeles, Los Angeles, California|West Los Angeles]] *{{jct|state=CA|SR|2}} in [[Westwood, Los Angeles|Westwood]] *{{jct|state=CA|US|101}} in [[Sherman Oaks, Los Angeles, California|Sherman Oaks]] *{{Jct|state=CA|SR|118}} in [[Mission Hills, Los Angeles|Mission Hills]] }} |direction_b = North |terminus_b = {{jct|state=CA|I|5}} near [[San Fernando, California|San Fernando]] |counties = [[Orange County, California|Orange]], [[Los Angeles County, California|Los Angeles]] |spur_type = I |spur_of = 5 |previous_type = US |previous_route = 395 |next_type = US |next_route = 466 }} '''Interstate 405''' ('''I-405''') is an [[Interstate Highway]] in the [[Orange County, California|Orange]] and [[Los Angeles County, California|Los Angeles]] counties of [[California]]. It is a [[bypass (road)|bypass]] route of the [[Interstate 5]]. It goes from the I-5 near [[San Fernando, California|San Fernando]], through the west side of [[Los Angeles]] and [[Long Beach, California|Long Beach]] before ending back at the Interstate 5 near [[Irvine, California|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 port