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W.B. I-90 over LAKE WASHINGTON

Map 

Coordinates:
+47.58972, -122.25778
47°35'23" N, 122°15'28" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:W.B. I-90 over LAKE WASHINGTON
Structure number:0012833C0000000
Location:3.0 E JCT 1-5
Purpose:Carries highway and pedestrian walkway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:235.9 ft. [71.9 m]
Total length:1472.2 ft. [448.7 m]
Roadway width between curbs:51.8 ft. [15.8 m]
Deck width edge-to-edge:63.0 ft. [19.2 m]
Vertical clearance below bridge:34.1 ft. [10.4 m]
Owner:State Highway Agency [01]
Year built:1989
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Main span material:Prestressed concrete [5]
Main span design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: April 2017 

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:65,990 [as of 2015]
Truck traffic:3% 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Equal to present minimum criteria [6]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:54.9 tons [49.9 metric tons]
Inventory rating:31.9 tons [29.0 metric tons]
Sufficiency rating:77.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$31,795,000

Previous Inspections 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201777.0FairGoodSatisfactoryGood-65990
April 201576.8FairGoodSatisfactoryGood-66003
August 201376.8FairGoodSatisfactoryGood-66003
August 201172.8GoodGoodGoodGoodFO57428
August 200972.8GoodGoodGoodGoodFO57000