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W.B. I-90 over LAKE WASHINGTON

Map

Coordinates:
+47.58975, -122.25875
47°35'23" N, 122°15'32" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:W.B. I-90 over LAKE WASHINGTON
Structure number:0012833C0000000
Location:3.0 E JCT I-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:32.8 ft. [10.0 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]
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

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2017FairGoodSatisfactoryGood6599077.0
April 2015FairGoodSatisfactoryGood6600376.8
August 2013FairGoodSatisfactoryGood6600376.8
August 2011GoodGoodGoodGood5742872.8
August 2009GoodGoodGoodGood5700072.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.591591000
Steel Protective Coatingsq. ft.37,61437,5940020
Prestressed Concrete Closed Web/Box Girderlinear ft.2,5422,34901930
Deck
Reinforced Concrete Decksq. ft.85,72585,725000
Wearing Surfacessq. ft.85,725085,72500
Superstructure
Steel Pin or Pin & Hangar Assemblyeach11000
Substructure
Reinforced Concrete Columneach1414000
Reinforced Concrete Abutmentlinear ft.8383000
Reinforced Concrete Pile Cap/Footinglinear ft.52030
Reinforced Concrete Pileeach4646000
Reinforced Concrete Pier Caplinear ft.180180000
Joints
Compression Jointlinear ft.5205200
Assembly with Sealeach104010400
Bearings
Movable Bearingeach1212000
Pot Bearingeach88000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,9442,944000