+46.30673, -108.90901
46°18'24" N, 108°54'32" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 12 over TWIN COULEE
Structure number:P00014147+04581
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:Fair [5 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 2017FairSatisfactoryFairFair43663.4
December 2015FairSatisfactoryFairFair47063.9
December 2013FairSatisfactoryFairSatisfactory47063.9
December 2011FairSatisfactoryFairSatisfactory47063.9
December 2009FairGoodFairSatisfactory39066.0
December 2007GoodGoodGoodGood42076.4
December 2005FairSatisfactoryGoodGood52063.2
December 2003FairSatisfactoryGoodGood51062.3
January 2002GoodVery GoodGoodGood51063.3
March 2000GoodVery GoodGoodGood51063.3
January 1998GoodVery GoodGoodGood33066.8
April 1996GoodVery GoodGoodGood38066.1
November 1993GoodVery GoodGoodGood30065.0
April 1992GoodVery GoodGoodGood33067.6
January 1991GoodVery GoodVery GoodVery Good29069.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Timber Girder/Beamlinear ft.68261434340
Timber Abutmentlinear ft.7265700
Timber Pileeach184770
Timber Pier Caplinear ft.10552161126
Timber Decksq. ft.1,5931,5130800
Wearing Surfacessq. ft.1,5931,194319800
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.115109600
Steel Protective Coatingsq. ft.2882741400