+45.56514, -122.55784
45°33'55" N, 122°33'28" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-205 (HWY 064) SB over COLUMBIA SL & ALDERWOOD
Structure number:16055A064 02433
Location:2.2 MI S ORE-WASH LINE
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:120.1 ft. [36.6 m]
Total length:311.0 ft. [94.8 m]
Roadway width between curbs:65.9 ft. [20.1 m]
Deck width edge-to-edge:69.6 ft. [21.2 m]
Vertical clearance below bridge:16.7 ft. [5.1 m]
Skew angle:41°
Owner:State Highway Agency [01]
Year built:1980
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Epoxy Overlay [5]

Latest Available Inspection: August 2016 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:144,700 [as of 2014]
Truck traffic:5% 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:Equal to present minimum criteria [6]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:39.2 tons [35.6 metric tons]
Inventory rating:30.3 tons [27.5 metric tons]
Sufficiency rating:78.5

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
August 201678.5FairGoodGoodSatisfactory-144700
August 201478.5FairGoodGoodSatisfactory-74737
August 201278.5FairGoodGoodSatisfactory-74737
August 201078.5FairGoodGoodSatisfactory-74737
August 200880.5GoodGoodGoodGood-74737
August 200684.0GoodGoodGoodGood-69750
August 200484.0FairSatisfactoryGoodSatisfactory-69750
August 200283.0FairFairVery GoodGood-65000
August 200084.0GoodGoodVery GoodGood-65550
August 199884.0GoodGoodVery GoodGood-52701
August 199684.0GoodGoodVery GoodGood-52700
August 199484.0GoodGoodVery GoodGood-47600
August 199284.0GoodGoodVery GoodGood-47600
August 199084.0GoodGoodVery GoodGood-41600