County Road 54 over Black Thunder Creek


+43.58161, -104.72043
43°34'54" N, 104°43'14" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:County Road 54 over Black Thunder Creek
Structure number:DYD
Location:9 Miles S. Of Clareton
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:23.0 ft. [7.0 m]
Total length:140.1 ft. [42.7 m]
Roadway width between curbs:20.7 ft. [6.3 m]
Deck width edge-to-edge:22.0 ft. [6.7 m]
Owner:County Highway Agency [02]
Year built:1957
Historic significance:Historical significance is not determinable at this time [4]
Number of main spans:6
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:22 [as of 2017]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Better than present minimum criteria [7]
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:54.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$733,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018PoorSatisfactoryPoorPoor2254.8
April 2017PoorSatisfactoryPoorSatisfactory2254.8
April 2016PoorSatisfactoryPoorSatisfactory2247.3
April 2015PoorSatisfactoryPoorSatisfactory1047.4
April 2014PoorSatisfactoryPoorSatisfactory1047.4
March 2013PoorSatisfactoryPoorSatisfactory1047.1
March 2012PoorSatisfactoryPoorSatisfactory1047.3
March 2011PoorSatisfactoryPoorSatisfactory1047.1
March 2010FairSatisfactoryFairSatisfactory1061.0
March 2009FairSatisfactoryFairFair1061.0
April 2008FairSatisfactoryFairFair1061.0
March 2007FairSatisfactoryFairFair1061.0
March 2006FairSatisfactoryFairFair6060.9
April 2005FairSatisfactoryFairFair6060.9
April 2004FairSatisfactoryFairFair6060.9
April 2003FairSatisfactoryFairFair6060.9
March 2002FairSatisfactoryFairFair6060.9
March 2001FairSatisfactoryFairFair6060.9
April 2000PoorFairPoorFair6047.9
March 1999PoorFairPoorFair6047.9
April 1998PoorFairPoorFair6047.9
April 1997PoorFairPoorSatisfactory6047.9
May 1996PoorFairPoorSatisfactory6047.9
May 1995PoorFairSeriousFair6038.9
April 1994FairVery GoodSatisfactoryGood6070.9
April 1993FairVery GoodSatisfactoryGood6070.9
May 1992FairVery GoodSatisfactoryGood6070.9
May 1991FairVery GoodFairSatisfactory6055.3