US 101 NB 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 NB over I 405 & N101-S405 RAMP
Structure number:53 1146R
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:89.9 ft. [27.4 m]
Total length:213.9 ft. [65.2 m]
Roadway width between curbs:69.9 ft. [21.3 m]
Deck width edge-to-edge:73.8 ft. [22.5 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:40°
Owner:State Highway Agency [01]
Year built:1958
Year reconstructed:1971
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:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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:104.1 tons [94.6 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:62.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,471,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201662.0GoodVery GoodGoodGoodFO229750
April 201462.0GoodGoodVery GoodGoodFO229750
April 201262.0FairSatisfactoryVery GoodGoodFO154000
June 201059.0PoorPoorVery GoodGoodSD154000
April 200859.0PoorPoorVery GoodGoodSD154000
April 200659.0PoorPoorVery GoodGoodSD154000
March 200462.0FairSatisfactoryVery GoodGoodFO154000
November 200279.0FairSatisfactoryVery GoodGoodFO152050
May 200079.0FairSatisfactoryVery GoodGoodFO152050
April 199879.0FairSatisfactoryVery GoodGoodFO152050
April 199679.6GoodGoodGoodGoodFO154000
August 199479.6GoodGoodGoodGoodFO154000
August 199281.0GoodGoodGoodGoodFO136600