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HY 61SB TO HY 1NB over W MARQUAM BR RAMPS

Map 

Coordinates:
+45.50491, -122.67442
45°30'18" N, 122°40'28" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:HY 61SB TO HY 1NB over W MARQUAM BR RAMPS
Structure number:08591A061C00109
Location:W MARQUAM INTCHGE
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:155.5 ft. [47.4 m]
Total length:1937.8 ft. [590.6 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:37.1 ft. [11.3 m]
Vertical clearance below bridge:16.4 ft. [5.0 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:12
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:29,500 [as of 2014]
Truck traffic:5% 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:96.2

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201596.2FairSatisfactorySatisfactorySatisfactory-29500
July 201390.4FairSatisfactorySatisfactorySatisfactory-35468
June 201090.4FairGoodSatisfactorySatisfactory-35468
January 201090.4FairGoodSatisfactorySatisfactory-35468
May 200890.4FairGoodSatisfactorySatisfactory-35468
May 200690.6FairGoodSatisfactorySatisfactory-34094
May 200490.6FairGoodSatisfactorySatisfactory-34094
March 200290.7FairSatisfactorySatisfactoryGood-33101
March 200091.0GoodGoodGoodGood-29870
March 199893.1GoodGoodGoodGood-19430
March 199693.5GoodGoodGoodGood-19430
March 199493.5GoodGoodGoodGood-19430
March 199293.5GoodGoodGoodGood-19430
March 199091.5GoodGoodGoodGood-19400