WYO 173 over Big Horn River


+43.60377, -108.19760
43°36'14" N, 108°11'51" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:WYO 173 over Big Horn River
Structure number:JOE
Location:4 Mi S. Of Thermopolis
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:113.9 ft. [34.7 m]
Total length:292.0 ft. [89.0 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:34.8 ft. [10.6 m]
Owner:State Highway Agency [01]
Year built:1992
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 continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:319 [as of 2017]
Truck traffic:17% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Better than present minimum criteria [7]
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:92.6

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018FairGoodGoodSatisfactory31992.6
May 2016GoodGoodGoodGood31792.6
April 2014GoodGoodGoodGood23893.2
May 2012GoodGoodGoodGood23893.2
June 2010GoodGoodGoodGood292100.0
June 2008GoodGoodGoodGood290100.0
June 2006GoodGoodGoodGood290100.0
June 2004GoodGoodGoodGood290100.0
April 2002GoodGoodGoodGood270100.0
May 2000GoodGoodExcellentGood300100.0
May 1998GoodGoodExcellentGood300100.0
May 1996GoodGoodExcellentGood200100.0
June 1994GoodVery GoodVery GoodVery Good200100.0
April 1992GoodVery GoodVery GoodVery Good20098.0