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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:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: July 2015 

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. ratingEvaluationDeckSuper.Sub.ADT
July 201596.2Not deficientSatisfactorySatisfactorySatisfactory29500
July 201390.4Not deficientSatisfactorySatisfactorySatisfactory35468
June 201090.4Not deficientGoodSatisfactorySatisfactory35468
January 201090.4Not deficientGoodSatisfactorySatisfactory35468
May 200890.4Not deficientGoodSatisfactorySatisfactory35468
May 200690.6Not deficientGoodSatisfactorySatisfactory34094
May 200490.6Not deficientGoodSatisfactorySatisfactory34094
March 200290.7Not deficientSatisfactorySatisfactoryGood33101
March 200091.0Not deficientGoodGoodGood29870
20000.0Not applicable---26500
March 199893.1Not deficientGoodGoodGood19430
March 199693.5Not deficientGoodGoodGood19430
March 199493.5Not deficientGoodGoodGood19430
March 199293.5Not deficientGoodGoodGood19430
March 199091.5Not deficientGoodGoodGood19400