+46.30674, -108.90635
46°18'24" N, 108°54'23" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 12 over TWIN COULEE
Structure number:P00014147+05911
Location:1M E LAVINA
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:19.0 ft. [5.8 m]
Total length:57.1 ft. [17.4 m]
Roadway width between curbs:25.3 ft. [7.7 m]
Deck width edge-to-edge:27.9 ft. [8.5 m]
Owner:State Highway Agency [01]
Year built:1935
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: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: December 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:436 [as of 2016]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:63.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2017FairSatisfactorySatisfactoryFair43663.4
December 2015FairSatisfactoryGoodFair47063.9
December 2013FairGoodGoodFair47063.9
December 2011FairGoodGoodFair47063.9
December 2009FairGoodGoodFair39066.0
December 2007GoodGoodGoodGood42076.4
December 2005FairFairGoodSatisfactory52074.1
December 2003FairSatisfactoryGoodSatisfactory51075.3
January 2002FairSatisfactoryGoodSatisfactory51075.3
March 2000FairSatisfactoryGoodSatisfactory51075.3
January 1998FairSatisfactoryGoodSatisfactory33078.3
April 1996FairSatisfactoryGoodSatisfactory38077.8
November 1993FairSatisfactoryGoodSatisfactory30076.0
April 1992FairSatisfactoryGoodSatisfactory30076.0
January 1991GoodGoodGoodGood29068.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Timber Girder/Beamlinear ft.68259334550
Timber Abutmentlinear ft.7261470
Timber Pileeach189360
Timber Pier Caplinear ft.105100500
Timber Decksq. ft.1,5931,43415900
Wearing Surfacessq. ft.1,5931,194803190
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.115862900
Steel Protective Coatingsq. ft.2880259290