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I-5 (HWY 001) NB over MARQUAM BRIDGE RAMP

Map

Coordinates:
+45.50684, -122.67082
45°30'25" N, 122°40'15" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:I-5 (HWY 001) NB over MARQUAM BRIDGE RAMP
Structure number:08590D001 30068
Location:0.8 MI S OF BURNSIDE BR
Purpose:Carries highway overpass (third level) over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:177.2 ft. [54.0 m]
Total length:2319.0 ft. [706.8 m]
Roadway width between curbs:57.1 ft. [17.4 m]
Deck width edge-to-edge:62.0 ft. [18.9 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Owner:State Highway Agency [01]
Year built:1966
Year reconstructed:1994
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:13
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: June 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:88,500 [as of 2014]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:59.8 tons [54.4 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:81.0
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$23,957,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201581.0FairGoodGoodSatisfactoryFO88500
June 201281.0FairGoodGoodSatisfactoryFO71407
June 201081.0GoodGoodGoodGoodFO71407
February 200981.0GoodGoodGoodGoodFO71407
February 200781.0GoodGoodGoodGoodFO67800
February 200581.0GoodGoodGoodGoodFO68300
February 200381.0GoodGoodGoodGoodFO48100
February 200181.0GoodGoodGoodGoodFO72490
February 199981.0GoodGoodVery GoodVery GoodFO72490
February 199781.0GoodVery GoodVery GoodVery GoodFO60900
February 199581.0GoodVery GoodVery GoodVery GoodFO54500
February 199380.4GoodGoodGoodVery GoodFO24000
February 199179.0GoodGoodGoodGoodFO52200