+48.44578, -122.34111
48°26'45" 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:7.9 ft. [2.4 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]
Operating rating:49.9 tons [45.4 metric tons]
Inventory rating:29.9 tons [27.2 metric tons]
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 

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201745.6FairSatisfactoryFairSatisfactoryFO70948
June 201546.6FairSatisfactoryFairSatisfactoryFO70948
November 201346.6FairSatisfactoryFairSatisfactoryFO70948
August 201253.8FairSatisfactoryFairFairFO70925
August 201059.8FairSatisfactoryFairSatisfactoryFO70526
June 200858.8FairSatisfactoryFairSatisfactoryFO70526
June 200660.6FairSatisfactoryFairSatisfactoryFO57000
June 200460.6FairSatisfactoryFairSatisfactoryFO57000
September 200359.4FairFairFairGoodFO57000
August 200259.4FairFairFairGoodFO57000
June 200159.4FairFairFairGoodFO57000
July 199974.8FairSatisfactorySatisfactoryGoodFO46975
May 199749.1FairSatisfactorySatisfactoryGoodFO46975
April 199774.8FairSatisfactorySatisfactoryGoodFO46975
April 199675.8FairSatisfactorySatisfactoryGoodFO46975
March 199575.8FairSatisfactorySatisfactoryGoodFO46975
October 199277.4FairSatisfactoryGoodGoodFO29200
November 199072.2PoorSeriousGoodGoodSD29200