Interstate 405

Interstate 405 Is A North-South Interstate Highway In Southern California. It Is A Bypass Auxiliary Route Of Interstate 5, Running Along The Southern And Western Parts Of The Greater Los Angeles Area From Irvine In The South To Near San Fernando In The North. The Entire Interstate Freeway Is Known As The Northern Segment Of The San Diego Freeway. Interstate 405 Is A Heavily Traveled Thoroughfare By Both Commuters And By Freight Haulers Along It's Entire Length And Is The Busiest And Most Congested Freeway In The United States. The Freeway's Annual Average Daily Traffic Between Exits 21 And 22 In Seal Beach Reached 374,000 in 2008, Making It The Highest Count In The Nation. It Has Played A Crucial Role In The Development Of Dozens Of Cities And Suburbs Along It's Route Through Los Angeles And Orange Counties.

In Oregon
Interstate 405 Is A Short Interstate Highway In Portland, Oregon. It Forms A Loop Of Interstate 5 That Travels Through Downtown Portland West Of The Williamette River.

In Washington
Interstate 405 In Washington Is A 30-Mile Stretch Of Freeway That Bypasses Seattle East Of Lake Washington. The Northern Terminus Is In Lynnwood And The Southern Terminus Is At Tukwila. The Highway Runs Through What Hase Since Become The Eastside Technology Center Of Bellevue And Kirkland, Making It An Often Congested Commuter Path. The Interstate Freeway Is Known For It's Meandering S-Curves Through Renton. It Intersects With Interstate 90 And A Number Of Major State Routes. Interstate 405 Was Laid Over Secondary State Highway 2A.

Route Information
Defined By Streets And Highways Code 615

Maintained By Caltrans

Length: 72.415 Miles

Existed: 1964 - Present

Major Junctions
South End: Interstate 5 In Irvine

California State Route 55 In Costa Mesa

California State Route 22 And Interstate 605 In Seal Beach

Interstate 710 In Long Beach

Interstate 110 In Carson

Interstate 105 Near LAX Airport

Interstate 10 In West Los Angeles

U.S. Route 101 In Sherman Oaks

North End: Interstate 5 Near San Fernando

In Oregon
South End: Interstate 5 In Portland

U.S. Route 26 In Portland

U.S. Route 30 In Portland

North End: Interstate 5 And U.S. Route 30 In Portland

In Washington
South End: Interstate 5 And Washington State Route 518 In Tukwila

Washington State Route 167 In Renton

Washington State Route 900 In Renton

Interstate 90 In Factoria

Washington State Route 520 In Bellevue

Washington State Route 908 In Kirkland

Washington State Route 522 In Bothell

North End: Interstate 5 And Washington State Route 525 In Lynwood