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I-205 (HWY 064) NB over COLUMBIA SL& ALDERWOOD

Map 

Coordinates:
+45.56506, -122.55733
45°33'54" N, 122°33'26" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I-205 (HWY 064) NB over COLUMBIA SL& ALDERWOOD
Structure number:16055 064 02434
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:16.1 ft. [4.9 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 2014 

Status:Open, no restriction [A]
Average daily traffic:68,882 [as of 2010]
Truck traffic:6% 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:43.9 tons [39.9 metric tons]
Inventory rating:33.9 tons [30.8 metric tons]
Sufficiency rating:81.3

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201481.3Not deficientGoodGoodSatisfactory68882
August 201281.3Not deficientGoodGoodSatisfactory68882
August 201081.3Not deficientGoodGoodSatisfactory68882
August 200883.3Not deficientGoodGoodGood68882
August 200684.0Not deficientGoodGoodGood67800
August 200482.0Not deficientSatisfactoryGoodSatisfactory69750
August 200282.0Not deficientGoodVery GoodGood69250
August 200082.0Not deficientGoodVery GoodVery Good131100
August 199884.0Not deficientGoodVery GoodVery Good52701
August 199684.0Not deficientGoodVery GoodVery Good52700
August 199484.0Not deficientGoodVery GoodVery Good47600
August 199284.0Not deficientGoodVery GoodVery Good47600
August 199084.0Not deficientGoodVery GoodVery Good41600