+43.32944, -114.98611
43°19'46" N, 114°59'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 over ARNOLD CREEK
Structure number:000000000014990
Location:10.0 W. FAIRFIELD
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:22.0 ft. [6.7 m]
Total length:22.0 ft. [6.7 m]
Roadway width between curbs:36.4 ft. [11.1 m]
Deck width edge-to-edge:38.1 ft. [11.6 m]
Owner:State Highway Agency [01]
Year built:1961
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:MS 18 / HS 20 [5]
Main span material:Concrete [1]
Main span design:Frame [07]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,600 [as of 2015]
Truck traffic:14% of total traffic
Deck condition:Satisfactory [6 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:Equal to present minimum criteria [6]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:88.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$392,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairSatisfactorySatisfactorySatisfactory160088.5
July 2015FairSatisfactorySatisfactorySatisfactory140076.0
July 2013FairSatisfactorySatisfactorySatisfactory140076.0
July 2012FairSatisfactorySatisfactorySatisfactory140077.0
July 2011FairSatisfactorySatisfactorySatisfactory150076.2
July 2010FairSatisfactorySatisfactorySatisfactory150076.2
July 2009FairSatisfactorySatisfactorySatisfactory130077.7
October 2008FairSatisfactorySatisfactorySatisfactory130075.2
October 2007FairSatisfactorySatisfactorySatisfactory130075.2
October 2005FairSatisfactorySatisfactorySatisfactory120076.2
October 2003FairSatisfactorySatisfactorySatisfactory110077.1
October 2001FairSatisfactorySatisfactorySatisfactory110077.1
October 1999FairGoodGoodSatisfactory130073.2
October 1997GoodGoodGoodGood120074.2
October 1995GoodGoodGoodGood120081.1
October 1993GoodGoodGoodGood98082.7
October 1992GoodGoodGoodGood98082.7
October 1990GoodGoodGoodGood98082.7

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Abutmentlinear ft.75601500
Reinforced Concrete Slabsq. ft.9158605320