US 20 over Big Horn River


+43.59224, -108.21362
43°35'32" N, 108°12'49" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 over Big Horn River
Structure number:BRM
Location:Shoshoni - Thermopolis
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:84.0 ft. [25.6 m]
Total length:313.0 ft. [95.4 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:35.1 ft. [10.7 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1957
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:2,660 [as of 2017]
Truck traffic:13% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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 the assessed or calculated scour condition. [8]
Sufficiency rating:72.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairFairSatisfactoryGood266072.0
May 2016FairFairSatisfactoryGood266072.0
April 2014FairFairSatisfactoryGood143476.4
May 2012FairFairSatisfactoryGood263972.0
June 2010FairFairSatisfactoryGood267972.0
June 2008FairFairSatisfactoryGood265072.0
June 2006FairFairSatisfactoryGood260072.0
June 2004FairFairSatisfactoryGood269072.0
April 2002FairFairSatisfactoryGood270072.0
May 2000FairFairGoodSatisfactory250072.0
May 1998FairFairGoodSatisfactory225072.0
May 1996FairFairGoodSatisfactory205072.0
June 1994GoodVery GoodVery GoodVery Good205061.9
February 1992GoodVery GoodVery GoodVery Good195063.9
November 1989GoodVery GoodVery GoodVery Good195063.9

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,26901,26900
Steel Protective Coatingsq. ft.18,38814,7103,67800
Reinforced Concrete Decksq. ft.10,9559,4461,423860
Wearing Surfacessq. ft.10,01610,016000
Reinforced Concrete Pier Walllinear ft.108108000
Reinforced Concrete Abutmentlinear ft.1121001200
Reinforced Concrete Pier Caplinear ft.110110000
Strip Seal Jointlinear ft.4204200
Assembly with Sealeach4204200
Movable Bearingeach1601600
Steel Protective Coatingsq. ft.64160048
Fixed Bearingeach40400
Steel Protective Coatingsq. ft.1640012
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.626626000
Steel Protective Coatingsq. ft.2,0032,003000