US 101 SB over I 405 & N101-S405 RAMP


+34.15998, -118.46926
34°09'36" N, 118°28'09" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 101 SB over I 405 & N101-S405 RAMP
Structure number:53 1146L
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:87.9 ft. [26.8 m]
Total length:200.1 ft. [61.0 m]
Roadway width between curbs:64.0 ft. [19.5 m]
Deck width edge-to-edge:67.3 ft. [20.5 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:34°
Owner:State Highway Agency [01]
Year built:1958
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: March 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:229,750 [as of 2009]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:79.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018GoodGoodGoodGood22975079.0
April 2016GoodVery GoodGoodVery Good22975079.0
April 2014GoodGoodGoodGood22975079.0
April 2012FairFairGoodGood15400078.0
June 2010FairFairGoodGood15400078.0
April 2008FairFairGoodGood15400078.0
April 2006FairFairGoodGood15400078.0
March 2004FairSatisfactoryGoodGood15400079.0
April 2002FairSatisfactoryGoodGood15205079.0
May 2000FairSatisfactoryGoodGood15205079.0
April 1998FairSatisfactoryGoodGood15205079.0
April 1996GoodGoodGoodGood15400081.9
August 1994GoodGoodGoodGood15400081.9
August 1992GoodGoodGoodGood13660083.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Closed Web/Box Girderlinear ft.61511000
Reinforced Concrete Top Flangesq. ft.1,2601,260000
Concrete Protective Coatingsq. ft.1,2601,260000
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.5454000
Reinforced Concrete Pier Caplinear ft.4848000
Pourable Jointlinear ft.5454000
Fixed Bearingeach1818000
Steel Protective Coatingsq. ft.99000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.134133010