+42.73015, -97.21941
42°43'49" N, 97°13'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:N12 over WEST BOW CREEK
Structure number:S012 20366
Location:3SW WYNOT
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:65.0 ft. [19.8 m]
Total length:157.2 ft. [47.9 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:30.8 ft. [9.4 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1959
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:3
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: September 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:1,125 [as of 2012]
Truck traffic:10% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
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 being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Sufficiency rating:48.3
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2016PoorPoorPoorSatisfactory112548.3
September 2014PoorPoorPoorSatisfactory112548.3
September 2012PoorPoorPoorGood115052.1
August 2010PoorPoorFairGood118066.2
October 2008FairFairFairGood118070.2
September 2006FairFairFairGood112573.4
March 2004FairFairFairGood111073.4
September 2002FairFairFairGood107573.4
March 2000FairFairFairGood114073.4
April 1998FairFairFairGood114073.4
March 1996FairSatisfactorySatisfactoryGood90084.5
March 1994FairSatisfactorySatisfactoryGood75090.8
March 1992FairSatisfactorySatisfactoryGood84084.5
March 1990FairSatisfactorySatisfactoryGood84084.5

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Columneach44000
Reinforced Concrete Abutmentlinear ft.5953060
Prestressed Concrete Pileeach1212000
Reinforced Concrete Pier Caplinear ft.1381050330
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.388038800
Reinforced Concrete Slabsq. ft.5,9505,950000
Wearing Surfacessq. ft.5,0395,039000