SR 99 over N 50TH ST


+47.66510, -122.34734
47°39'54" N, 122°20'50" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:SR 99 over N 50TH ST
Structure number:0001684A0000000
Location:9.2 N JCT SR 509
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:42.0 ft. [12.8 m]
Total length:44.0 ft. [13.4 m]
Roadway width between curbs:65.0 ft. [19.8 m]
Deck width edge-to-edge:81.4 ft. [24.8 m]
Vertical clearance below bridge:13.8 ft. [4.2 m]
Owner:State Highway Agency [01]
Year built:1933
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Concrete [1]
Main span design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: March 2016 

Status:Open, no restriction [A]
Average daily traffic:44,242 [as of 2012]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:49.5 tons [45.0 metric tons]
Inventory rating:29.7 tons [27.0 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:63.7

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
March 201663.7Functionally obsoleteSatisfactoryFairGood44242
March 201463.7Functionally obsoleteSatisfactoryFairGood44242
March 201263.6Functionally obsoleteSatisfactoryFairGood44972
May 201063.1Functionally obsoleteSatisfactoryFairGood48606
June 200863.8Functionally obsoleteSatisfactoryFairGood43806
June 200653.6Functionally obsoleteSatisfactoryFairGood48950
April 200466.2Functionally obsoleteSatisfactorySatisfactoryGood48950
June 200264.2Functionally obsoleteSatisfactorySatisfactoryGood48950
February 200063.2Functionally obsoleteSatisfactorySatisfactoryGood48950
October 199763.2Functionally obsoleteSatisfactorySatisfactoryGood48950
November 199547.8Functionally obsoleteSatisfactorySatisfactoryGood48950
May 199347.8Functionally obsoleteSatisfactorySatisfactoryGood48950
September 199148.4Functionally obsoleteSatisfactorySatisfactoryGood45250