12TH AVE S over I-90


+47.59475, -122.31716
47°35'41" N, 122°19'02" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:12TH AVE S over I-90
Structure number:0008155F0000000
Location:0.2 E JCT I-5
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:126.0 ft. [38.4 m]
Total length:366.2 ft. [111.6 m]
Roadway width between curbs:44.0 ft. [13.4 m]
Deck width edge-to-edge:65.0 ft. [19.8 m]
Vertical clearance below bridge:20.0 ft. [6.1 m]
Owner:State Highway Agency [01]
Year built:1968
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Number of main spans:4
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: March 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:18,400 [as of 2012]
Truck traffic:1% 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:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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:98.0 tons [89.1 metric tons]
Inventory rating:86.1 tons [78.3 metric tons]
Sufficiency rating:70.3

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201670.3FairSatisfactorySatisfactorySatisfactoryFO18400
March 201470.3FairSatisfactorySatisfactorySatisfactoryFO18400
March 201274.6FairSatisfactorySatisfactorySatisfactoryFO4500
April 201056.0FairSatisfactorySatisfactorySatisfactoryFO4500
April 200856.0FairSatisfactorySatisfactorySatisfactoryFO4500
May 200756.0FairSatisfactorySatisfactorySatisfactoryFO4500
May 200656.0FairSatisfactorySatisfactoryGoodFO4500
December 200556.0FairSatisfactoryGoodGoodFO4500
December 200356.0FairSatisfactoryGoodGoodFO4500
August 200156.0FairSatisfactoryGoodGoodFO4500
May 199956.0FairSatisfactoryGoodGoodFO4500
July 199155.9FairSatisfactoryGoodGoodFO4500