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NE ALDERWOOD ROAD over B-113 X COLUMBIA SLOUGH

Map

Coordinates:
+45.57214, -122.58522
45°34'20" N, 122°35'07" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:NE ALDERWOOD ROAD over B-113 X COLUMBIA SLOUGH
Structure number:25B113000000000
Location:AT N E CORNFOOT ROAD
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:44.9 ft. [13.7 m]
Total length:47.9 ft. [14.6 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:44.0 ft. [13.4 m]
Skew angle:
Owner:City or Municipal Highway Agency [04]
Year built:1989
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Main span material:Prestressed concrete [5]
Main span design:Slab [01]
Deck type:Concrete Precast Panels [2]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,241 [as of 2010]
Truck traffic:25% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 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]
Water adequacy appraisal:Equal to present desirable criteria [8]
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 with "unknown" foundation that has not been evaluated for scour. [U]
Operating rating:78.9 tons [71.7 metric tons]
Inventory rating:46.9 tons [42.6 metric tons]
Sufficiency rating:94.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$246,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201694.3FairGoodSatisfactoryGood-5241
July 201494.3FairGoodSatisfactoryGood-5241
July 201277.1FairGoodSatisfactoryGoodFO5241
August 201077.1FairGoodSatisfactoryGoodFO5241
November 200877.1GoodGoodGoodGoodFO5241
June 200680.1GoodGoodVery GoodVery GoodFO5038
September 200480.1GoodGoodVery GoodVery GoodFO5038
July 200282.1GoodVery GoodVery GoodVery Good-4892
May 200082.2GoodExcellentExcellentExcellent-4750
April 199882.3GoodExcellentExcellentExcellent-4250
August 199782.3GoodExcellentExcellentExcellent-4250
January 199682.3GoodExcellentExcellentExcellent-4250
September 199580.2GoodExcellentExcellentExcellent-4000
October 199380.2GoodExcellentExcellentExcellent-4000
November 199182.1GoodExcellentExcellentExcellent-4900