+47.57140, -122.33934
47°34'17" 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 2015 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:38,698 [as of 2012]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 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]
Operating rating:42.6 tons [38.7 metric tons]
Inventory rating:25.7 tons [23.4 metric tons]
Sufficiency rating:70.9

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201570.9FairSatisfactoryFairSatisfactory-38698
March 201470.9FairSatisfactoryFairSatisfactory-38698
November 201148.0PoorSatisfactoryFairPoorSD46093
December 200945.4PoorFairFairPoorSD50917
December 200744.2PoorFairFairPoorSD74649
September 200547.9PoorFairSatisfactoryPoorSD41733
June 200347.9PoorFairSatisfactoryPoorSD41733
May 200250.4PoorFairSatisfactoryPoorSD41733
July 200150.4PoorFairSatisfactoryPoorSD41733
August 200029.2PoorFairSatisfactorySeriousSD41733
April 199936.0PoorFairSatisfactorySeriousSD41733
June 199741.2PoorSatisfactorySatisfactorySeriousSD41733
April 199688.3FairSatisfactorySatisfactorySatisfactoryFO41733
December 199488.3FairSatisfactorySatisfactorySatisfactoryFO41733
December 199386.3FairSatisfactorySatisfactorySatisfactoryFO54501
November 199164.6FairFairSatisfactorySatisfactoryFO54501