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I-5 (HWY 001) SB over MARQUAM RAMP SB

Map 

Coordinates:
+45.50929, -122.66711
45°30'33" N, 122°40'02" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I-5 (HWY 001) SB over MARQUAM RAMP SB
Structure number:08591C001 30010
Location:WEST MARQUAM INTERCHANGE
Purpose:Carries highway overpass (third level) over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:189.6 ft. [57.8 m]
Total length:1898.4 ft. [578.6 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:37.1 ft. [11.3 m]
Vertical clearance above deck:16.1 ft. [4.9 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Owner:State Highway Agency [01]
Year built:1966
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:14
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:137,300 [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:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of replacement [2]
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:79.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$12,989,000

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201579.0FairSatisfactorySatisfactorySatisfactoryFO137300
July 201379.0FairSatisfactorySatisfactorySatisfactoryFO64236
June 201052.0PoorGoodPoorSatisfactorySD64236
January 201052.0PoorGoodPoorSatisfactorySD64236
January 200852.0PoorGoodPoorSatisfactorySD63600
January 200668.0FairGoodSatisfactoryFairFO61550
January 200468.0FairGoodSatisfactoryFairFO39665
January 200279.0GoodGoodGoodGoodFO38510
January 200079.0GoodGoodGoodGoodFO37100
January 199879.0GoodGoodGoodGoodFO60900
January 199679.7GoodGoodGoodGoodFO25500
January 199479.7GoodGoodGoodGoodFO25500
January 199279.7GoodGoodGoodGoodFO25500