SR 99 over N 50TH ST


+47.66502, -122.34731
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:13.1 ft. [4.0 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 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:39,981 [as of 2016]
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]
Sufficiency rating:64.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,496,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018FairSatisfactoryFairGood3998164.6
March 2016FairSatisfactoryFairGood4424263.7
March 2014FairSatisfactoryFairGood4424263.7
March 2012FairSatisfactoryFairGood4497263.6
May 2010FairSatisfactoryFairGood4860663.1
June 2008FairSatisfactoryFairGood4380663.8
June 2006FairSatisfactoryFairGood4895053.6
April 2004FairSatisfactorySatisfactoryGood4895066.2
June 2002FairSatisfactorySatisfactoryGood4895064.2
February 2000FairSatisfactorySatisfactoryGood4895063.2
October 1997FairSatisfactorySatisfactoryGood4895063.2
November 1995FairSatisfactorySatisfactoryGood4895047.8
May 1993FairSatisfactorySatisfactoryGood4895047.8
September 1991FairSatisfactorySatisfactoryGood4525048.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Girder/Beamlinear ft.2522360160
Reinforced Concrete Decksq. ft.3,3003,292008
Wearing Surfacessq. ft.3,30003,30000
Reinforced Concrete Abutmentlinear ft.184184000
Open Jointlinear ft.130013000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.8888000
Reinforced Concrete Bridge Raillinear ft.8886020