SR 520 W-S RAMP over I-5


+47.64222, -122.32239
47°38'32" N, 122°19'21" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 520 W-S RAMP over I-5
Structure number:0006470C0000000
Location:0.1 E JCT I-5
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:147.0 ft. [44.8 m]
Total length:351.1 ft. [107.0 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:31.2 ft. [9.5 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1962
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: August 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:24,626 [as of 2016]
Truck traffic:4% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
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:73.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$4,493,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairSatisfactorySatisfactoryGood2462673.8
August 2015FairSatisfactorySatisfactoryGood2131874.3
August 2013FairSatisfactorySatisfactoryGood2131873.3
September 2011FairSatisfactorySatisfactoryGood2894374.4
August 2009FairSatisfactorySatisfactoryGood2853774.5
May 2007FairSatisfactorySatisfactoryGood3164471.9
November 2005FairSatisfactorySatisfactoryGood3164471.9
December 2003FairSatisfactorySatisfactoryGood3164471.9
December 2001FairSatisfactorySatisfactoryGood3164471.9
June 1999FairSatisfactorySatisfactoryGood3164470.9
June 1997FairSatisfactorySatisfactoryGood3164473.1
December 1995FairSatisfactorySatisfactoryGood3164473.8
May 1993FairSatisfactorySatisfactoryGood2740076.4
October 1991FairSatisfactorySatisfactoryGood2168073.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Closed Web/Box Girderlinear ft.351349110
Reinforced Concrete Decksq. ft.9,8289,8180010
Reinforced Concrete Columneach22000
Reinforced Concrete Abutmentlinear ft.6363000
Pourable Jointlinear ft.5600056
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.702702000
Reinforced Concrete Bridge Raillinear ft.702702000