US 101 SB over I 405 & N101-S405 RAMP


+34.16167, -118.46667
34°09'42" N, 118°28'00" 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:14.8 ft. [4.5 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: April 2016 

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:Very Good [8 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Very Good [8 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]
Operating rating:49.9 tons [45.4 metric tons]
Inventory rating:35.3 tons [32.1 metric tons]
Sufficiency rating:79.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,103,000

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201679.0GoodVery GoodGoodVery GoodFO229750
April 201479.0GoodGoodGoodGoodFO229750
April 201278.0FairFairGoodGoodFO154000
June 201078.0FairFairGoodGoodFO154000
April 200878.0FairFairGoodGoodFO154000
April 200678.0FairFairGoodGoodFO154000
March 200479.0FairSatisfactoryGoodGoodFO154000
April 200279.0FairSatisfactoryGoodGoodFO152050
May 200079.0FairSatisfactoryGoodGoodFO152050
April 199879.0FairSatisfactoryGoodGoodFO152050
April 199681.9GoodGoodGoodGoodFO154000
August 199481.9GoodGoodGoodGoodFO154000
August 199283.2GoodGoodGoodGoodFO136600