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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

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
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

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.5,5794,4631,11600
Steel Protective Coatingsq. ft.90,94672,75713,6424,5470
Prestressed Concrete Girder/Beamlinear ft.6986425600
Reinforced Concrete Girder/Beamlinear ft.154015400
Deck
Reinforced Concrete Decksq. ft.57,52945,9908,6292,9100
Reinforced Concrete Top Flangesq. ft.1,3291,329000
Superstructure
Steel Pin or Pin & Hangar Assemblyeach83500
Steel Protective Coatingsq. ft.92374690
Substructure
Reinforced Concrete Columneach2019100
Reinforced Concrete Abutmentlinear ft.3229300
Reinforced Concrete Pier Caplinear ft.56728428300
Joints
Compression Jointlinear ft.44489311044
Other Jointlinear ft.3203200
Bearings
Elastomeric Bearingeach2424000
Movable Bearingeach3603600
Fixed Bearingeach4404400
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3,2162,41280400