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TWP 29 over N FK LITTLE SIOUX RIVER

Map

Coordinates:
+43.57352, -95.19594
43°34'25" N, 95°11'45" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TWP 29 over N FK LITTLE SIOUX RIVER
Structure number:L9311
Location:1.0 MI W OF JCT TH 86
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:32.2 ft. [9.8 m]
Total length:34.5 ft. [10.5 m]
Roadway width between curbs:20.0 ft. [6.1 m]
Deck width edge-to-edge:22.0 ft. [6.7 m]
Owner:Town or Township Highway Agency [03]
Year built:1970
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Wood or timber [7]
Main span design:Slab [01]
Deck type:Wood or Timber [8]
Wearing surface:Gravel [8]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:20 [as of 1988]
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: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 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:78.3
Estimated cost of work:$77,000,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairGoodGoodSatisfactory2078.3
September 2015FairGoodGoodSatisfactory2078.3
September 2013FairGoodGoodSatisfactory2074.0
November 2011FairGoodGoodSatisfactory2074.0
September 2009FairGoodGoodSatisfactory2073.9
November 2007FairGoodGoodSatisfactory2082.6
January 2006FairGoodGoodSatisfactory2082.6
January 2004FairGoodGoodSatisfactory2082.6
March 2002FairSatisfactorySatisfactoryGood2094.0
December 1999FairSatisfactorySatisfactoryGood2080.4
December 1998FairSatisfactorySatisfactoryGood2080.4
December 1997FairSatisfactorySatisfactoryGood2071.2
December 1995FairSatisfactorySatisfactoryGood2079.8
December 1994FairSatisfactorySatisfactoryGood2079.8
December 1993FairSatisfactorySatisfactoryGood2079.8
December 1992FairSatisfactorySatisfactoryGood2079.8
December 1991FairSatisfactoryGoodGood2079.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Timber Girder/Beamlinear ft.344344000
Substructure
Timber Abutmentlinear ft.88246400
Timber Pileeach1401400
Timber Pier Caplinear ft.4949000
Deck
Timber Decksq. ft.759759000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.6962007
Steel Protective Coatingsq. ft.207207000
Timber Bridge Raillinear ft.1110001