+48.44331, -122.34103
48°26'36" N, 122°20'28" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-5 over SKAGIT RIVER
Structure number:0004794A0000000
Location:0.7 N JCT SR 538
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:160.1 ft. [48.8 m]
Total length:1111.9 ft. [338.9 m]
Roadway width between curbs:55.4 ft. [16.9 m]
Deck width edge-to-edge:60.0 ft. [18.3 m]
Vertical clearance above deck:17.7 ft. [5.4 m]
Vertical clearance below bridge:6.6 ft. [2.0 m]
Owner:State Highway Agency [01]
Year built:1955
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:70,948 [as of 2012]
Truck traffic:11% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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 assessed or calculated scour condition. [5]
Sufficiency rating:45.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$32,915,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017FairSatisfactoryFairSatisfactory7094845.6
June 2015FairSatisfactoryFairSatisfactory7094846.6
November 2013FairSatisfactoryFairSatisfactory7094846.6
August 2012FairSatisfactoryFairFair7092553.8
August 2010FairSatisfactoryFairSatisfactory7052659.8
June 2008FairSatisfactoryFairSatisfactory7052658.8
June 2006FairSatisfactoryFairSatisfactory5700060.6
June 2004FairSatisfactoryFairSatisfactory5700060.6
September 2003FairFairFairGood5700059.4
August 2002FairFairFairGood5700059.4
June 2001FairFairFairGood5700059.4
July 1999FairSatisfactorySatisfactoryGood4697574.8
May 1997FairSatisfactorySatisfactoryGood4697549.1
April 1997FairSatisfactorySatisfactoryGood4697574.8
April 1996FairSatisfactorySatisfactoryGood4697575.8
March 1995FairSatisfactorySatisfactoryGood4697575.8
October 1992FairSatisfactoryGoodGood2920077.4
November 1990PoorSeriousGoodGood2920072.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.1,3041,304000
Reinforced Concrete Girder/Beamlinear ft.3,2483,245030
Steel Stringerlinear ft.5,2805,2492830
Steel Protective Coatingsq. ft.38,94228,6971139,741391
Reinforced Concrete Decksq. ft.62,44062,073293074
Wearing Surfacessq. ft.53,312053,01727619
Steel Trusslinear ft.972540274050
Steel Protective Coatingsq. ft.71,68952,82920917,933718
Steel Floor Beamlinear ft.1,26084004200
Steel Protective Coatingsq. ft.9,2936,848272,32494
Steel Gusset Plateeach8282000
Reinforced Concrete Columneach3230200
Reinforced Concrete Pier Walllinear ft.350350000
Reinforced Concrete Abutmentlinear ft.126126000
Reinforced Concrete Pier Caplinear ft.7917751060
Pourable Jointlinear ft.2240561680
Open Jointlinear ft.840084000
Assembly without Seal Jointlinear ft.280002800
Elastomeric Bearingeach1616000
Movable Bearingeach88000
Fixed Bearingeach88000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3,3363,325740