US101 (HWY 9) over ALSEA BAY


+44.43194, -124.07035
44°25'55" N, 124°04'13" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US101 (HWY 9) over ALSEA BAY
Structure number:01746B009 15554
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:450.2 ft. [137.2 m]
Total length:2910.2 ft. [887.0 m]
Roadway width between curbs:64.0 ft. [19.5 m]
Deck width edge-to-edge:80.1 ft. [24.4 m]
Vertical clearance below bridge:65.6 ft. [20.0 m]
Owner:State Highway Agency [01]
Year built:1992
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Main span material:Steel [3]
Main span design:Arch - Thru [12]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: July 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:9,900 [as of 2014]
Truck traffic:11% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:76.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2016FairGoodSatisfactorySatisfactory990076.7
July 2014FairGoodSatisfactorySatisfactory870076.7
July 2012FairGoodSatisfactorySatisfactory870076.7
July 2010FairGoodSatisfactoryGood920074.0
July 2008FairGoodSatisfactoryGood920074.0
July 2006GoodGoodGoodGood980075.0
July 2004GoodGoodGoodGood910075.0
February 2003GoodGoodGoodGood890075.0
March 2001GoodGoodGoodGood900075.0
February 1999GoodVery GoodGoodVery Good900075.0
February 1997GoodVery GoodVery GoodVery Good750075.0
February 1995GoodVery GoodVery GoodVery Good750075.0
January 1993GoodVery GoodVery GoodVery Good750075.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Steel Closed Web/Box Girderlinear ft.7006307000
Steel Protective Coatingsq. ft.33,20833,1882000
Prestressed Concrete Closed Web/Box Girderlinear ft.5,2804,1301,15000
Steel Stringerlinear ft.1767610000
Steel Protective Coatingsq. ft.1,2401,01023000
Steel Archlinear ft.7006604000
Steel Protective Coatingsq. ft.58,38258,3226000
Steel Secondary Cableeach80592100
Steel Protective Coatingsq. ft.4,3324,332000
Prestressed Concrete Top Flangesq. ft.205,312204,41290000
Wearing Surfacessq. ft.120,960120,960000
Steel Floor Beamlinear ft.1,63868895000
Steel Protective Coatingsq. ft.34,70233,4021,30000
Reinforced Concrete Columneach5251100
Reinforced Concrete Abutmentlinear ft.160156400
Reinforced Concrete Pile Cap/Footinglinear ft.2,4532,24820500
Strip Seal Jointlinear ft.1923216000
Assembly with Sealeach4800470010
Other Jointlinear ft.240240000
Elastomeric Bearingeach40400
Steel Protective Coatingsq. ft.2800028
Movable Bearingeach3203200
Steel Protective Coatingsq. ft.124040084
Enclosed/Concealed Bearingeach40400
Fixed Bearingeach2402400
Steel Protective Coatingsq. ft.7206408000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.5,8205,53328610
Steel Protective Coatingsq. ft.31,50031,4554500
Reinforced Concrete Bridge Raillinear ft.5,82005,82000
Reinforced Concrete Slabsq. ft.32,26030,3601,7002000
Wearing Surfacessq. ft.19,20019,200000