+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 

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. ratingEvaluationDeckSuper.Sub.ADT
October 201570.9Not deficientSatisfactoryFairSatisfactory38698
March 201470.9Not deficientSatisfactoryFairSatisfactory38698
November 201148.0Structurally deficientSatisfactoryFairPoor46093
December 200945.4Structurally deficientFairFairPoor50917
December 200744.2Structurally deficientFairFairPoor74649
September 200547.9Structurally deficientFairSatisfactoryPoor41733
June 200347.9Structurally deficientFairSatisfactoryPoor41733
May 200250.4Structurally deficientFairSatisfactoryPoor41733
July 200150.4Structurally deficientFairSatisfactoryPoor41733
August 200029.2Structurally deficientFairSatisfactorySerious41733
April 199936.0Structurally deficientFairSatisfactorySerious41733
June 199741.2Structurally deficientSatisfactorySatisfactorySerious41733
April 199688.3Functionally obsoleteSatisfactorySatisfactorySatisfactory41733
December 199488.3Functionally obsoleteSatisfactorySatisfactorySatisfactory41733
December 199386.3Functionally obsoleteSatisfactorySatisfactorySatisfactory54501
November 199164.6Functionally obsoleteFairSatisfactorySatisfactory54501