180th Street over Big Sioux River


+44.77524, -97.05305
44°46'31" N, 97°03'11" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:180th Street over Big Sioux River
Structure number:000000029217020
Location:3N & 1.3W of Castlewood
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:60.0 ft. [18.3 m]
Total length:62.0 ft. [18.9 m]
Roadway width between curbs:15.7 ft. [4.8 m]
Deck width edge-to-edge:15.7 ft. [4.8 m]
Owner:County Highway Agency [02]
Year built:1930
Year reconstructed:1970
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: September 2018

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:135 [as of 2016]
Truck traffic:2% of total traffic
Deck condition:Serious [3 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Basically intolerable requiring high priority of replacement [2]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Scour condition:Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:23.1
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,153,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018PoorSeriousPoorPoor13523.1
June 2016PoorSeriousPoorPoor13523.1
May 2014PoorPoorPoorSerious13529.9
June 2012PoorFairFairSerious13527.1
August 2010PoorFairFairPoor13527.1
August 2008PoorFairFairPoor13527.1
August 2006PoorFairFairPoor13527.1
July 2004PoorFairFairPoor13527.1
August 2002FairFairFairSatisfactory13532.6
July 2000FairSatisfactoryFairSatisfactory13533.6
September 1998FairSatisfactoryFairSatisfactory13529.2
August 1996PoorFairSeriousSatisfactory13524.1
August 1994PoorFairSeriousSatisfactory13524.2
June 1992PoorSeriousSeriousSatisfactory13523.2
June 1990PoorSeriousSeriousSatisfactory13523.2