+47.56753, -122.33942
47°34'03" N, 122°20'22" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 99 over SPOKANE ST
Structure number:0005758A0000000
Location:2.1 N JCT SR 509
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:134.8 ft. [41.1 m]
Total length:2792.1 ft. [851.0 m]
Roadway width between curbs:76.1 ft. [23.2 m]
Deck width edge-to-edge:84.0 ft. [25.6 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1959
Year reconstructed:2013
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:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:41,152 [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:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:81.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$89,344,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2017FairSatisfactorySatisfactorySatisfactory4115281.8
October 2015FairSatisfactoryFairSatisfactory3869870.9
March 2014FairSatisfactoryFairSatisfactory3869870.9
November 2011PoorSatisfactoryFairPoor4609348.0
December 2009PoorFairFairPoor5091745.4
December 2007PoorFairFairPoor7464944.2
September 2005PoorFairSatisfactoryPoor4173347.9
June 2003PoorFairSatisfactoryPoor4173347.9
May 2002PoorFairSatisfactoryPoor4173350.4
July 2001PoorFairSatisfactoryPoor4173350.4
August 2000PoorFairSatisfactorySerious4173329.2
April 1999PoorFairSatisfactorySerious4173336.0
June 1997PoorSatisfactorySatisfactorySerious4173341.2
April 1996FairSatisfactorySatisfactorySatisfactory4173388.3
December 1994FairSatisfactorySatisfactorySatisfactory4173388.3
December 1993FairSatisfactorySatisfactorySatisfactory5450186.3
November 1991FairFairSatisfactorySatisfactory5450164.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Closed Web/Box Girderlinear ft.2,4462,34601000
Steel Girder/Beamlinear ft.1,5361,5260100
Steel Protective Coatingsq. ft.30,38528,18601,319880
Prestressed Concrete Girder/Beamlinear ft.1,7051,705000
Reinforced Concrete Decksq. ft.212,268211,8822820104
Steel Columneach66000
Steel Protective Coatingsq. ft.118110053
Reinforced Concrete Columneach127127000
Reinforced Concrete Abutmentlinear ft.168168000
Reinforced Concrete Pile Cap/Footinglinear ft.66000
Steel Pier Caplinear ft.2041940100
Steel Protective Coatingsq. ft.4,0353,7430175117
Reinforced Concrete Pier Caplinear ft.385383020
Compression Jointlinear ft.7607600
Assembly without Seal Jointlinear ft.98801520836
Elastomeric Bearingeach1111000
Movable Bearingeach3838000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.8,3768,370060