+48.88146, -118.60390
48°52'53" N, 118°36'14" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 21 over KETTLE RIVER
Structure number:0006282A0000000
Location:18.3 N JCT SR 20
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:200.1 ft. [61.0 m]
Total length:205.1 ft. [62.5 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:32.5 ft. [9.9 m]
Vertical clearance above deck:15.4 ft. [4.7 m]
Owner:State Highway Agency [01]
Year built:1960
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:865 [as of 2016]
Truck traffic:14% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:81.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,296,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairSatisfactoryGoodGood86581.1
August 2016FairSatisfactoryGoodGood78181.2
August 2014GoodGoodGoodGood78181.2
August 2012GoodGoodGoodGood80581.2
September 2010GoodGoodGoodGood72988.2
September 2008GoodGoodGoodGood85481.1
June 2006GoodGoodGoodGood100080.8
June 2004FairSatisfactoryGoodGood100077.8
August 2002FairSatisfactoryGoodGood100077.8
September 2000FairSatisfactoryGoodGood105476.7
October 1998GoodGoodGoodGood105476.7
August 1996GoodGoodGoodGood105476.7
August 1994GoodGoodGoodGood105476.7
June 1992GoodGoodGoodGood60084.9