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HY 1SB TO HY 61NB over MARQ RAMP TO HWY 61 NB

Map

Coordinates:
+45.50542, -122.67536
45°30'20" N, 122°40'31" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:HY 1SB TO HY 61NB over MARQ RAMP TO HWY 61 NB
Structure number:08591B001C30046
Location:WEST MARQUAM INTERCHANGE
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:178.5 ft. [54.4 m]
Total length:1607.7 ft. [490.0 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:37.1 ft. [11.3 m]
Vertical clearance above deck:18.4 ft. [5.6 m]
Vertical clearance below bridge:17.7 ft. [5.4 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:1965
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:11
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: July 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:25,100 [as of 2014]
Truck traffic:9% 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:Equal to present minimum criteria [6]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:59.8 tons [54.4 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:87.1

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201587.1FairSatisfactorySatisfactorySatisfactory-25100
July 201387.3FairSatisfactorySatisfactorySatisfactory-24623
June 201087.3FairGoodSatisfactorySatisfactory-24623
January 201087.3FairGoodSatisfactorySatisfactory-24623
January 200887.4FairGoodSatisfactorySatisfactory-24379
January 200687.8FairGoodSatisfactorySatisfactory-23669
January 200475.1FairGoodFairFair-23669
January 200289.2GoodGoodGoodGood-22980
January 200089.3GoodGoodGoodGood-22750
January 199888.0GoodGoodGoodGood-25500
January 199688.5GoodGoodGoodGood-25500
January 199488.5GoodGoodGoodGood-25500
January 199286.5GoodGoodGoodGood-25500