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WB I-90 over LAKE WASHINGTON

Map

Coordinates:
+47.59038, -122.28750
47°35'25" N, 122°17'15" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:WB I-90 over LAKE WASHINGTON
Structure number:0012833B0000000
Location:2.3 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:262.2 ft. [79.9 m]
Total length:1369.2 ft. [417.3 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:45.9 ft. [14.0 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]
Number of main spans:6
Main spans material:Steel [3]
Main spans design:Box Beam or girders - Single or Spread [06]
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:66,003 [as of 2012]
Truck traffic:6% 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:Basically intolerable requiring high priority of corrrective action [3]
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:73.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$29,570,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2017FairGoodSatisfactoryGood6600373.0
April 2015FairGoodSatisfactoryGood6600372.8
August 2013FairGoodSatisfactoryGood6600372.8
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.549549000
Steel Protective Coatingsq. ft.37,61437,404020010
Prestressed Concrete Closed Web/Box Girderlinear ft.1,16785303140
Deck
Reinforced Concrete Decksq. ft.71,18871,188000
Wearing Surfacessq. ft.71,188071,18800
Superstructure
Steel Pin or Pin & Hangar Assemblyeach11000
Substructure
Reinforced Concrete Columneach1010000
Reinforced Concrete Pile Cap/Footinglinear ft.44000
Reinforced Concrete Pileeach3131000
Reinforced Concrete Pier Caplinear ft.379379000
Joints
Assembly with Sealeach104010400
Bearings
Movable Bearingeach1212000
Pot Bearingeach44000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,7182,718000