+46.48279, -110.26946
46°28'58" N, 110°16'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 12 over DRAINAGE
Structure number:P00014077+08001
Location:10M NW TWO DOT
Purpose:Carries highway over relief for waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:19.0 ft. [5.8 m]
Total length:21.0 ft. [6.4 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:26.6 ft. [8.1 m]
Owner:State Highway Agency [01]
Year built:1933
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Wood or timber [7]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: January 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:498 [as of 2016]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 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: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 assessed or calculated scour condition. [5]
Sufficiency rating:69.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2018FairGoodSatisfactoryGood49869.1
January 2016FairGoodSatisfactoryGood44069.8
January 2014FairGoodSatisfactoryGood44069.8
January 2012GoodGoodGoodGood44069.8
December 2009FairSatisfactoryGoodGood42071.0
December 2007FairSatisfactoryGoodGood76058.1
December 2005GoodGoodGoodVery Good54062.9
October 2003GoodGoodGoodVery Good51063.3
January 2002GoodGoodGoodVery Good51063.3
April 2000GoodGoodGoodVery Good72060.5
January 1998GoodGoodGoodVery Good55062.7
April 1996GoodVery GoodGoodVery Good49061.5
November 1993GoodVery GoodGoodVery Good39960.5
April 1992GoodGoodGoodVery Good43161.6
January 1991GoodVery GoodVery GoodVery Good45061.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Timber Girder/Beamlinear ft.27222014380
Timber Abutmentlinear ft.6663300
Timber Pileeach72500
Timber Pier Caplinear ft.5249300
Timber Decksq. ft.560560000
Wearing Surfacessq. ft.560560000
Bridge Rail
Timber Bridge Raillinear ft.43281500