Share:

TWIN BRIDGES RD over ANTELOPE CREEK 054

Map

Coordinates:
+48.69342, -104.43042
48°41'36" N, 104°25'50" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TWIN BRIDGES RD over ANTELOPE CREEK 054
Structure number:L46208001+01001
Location:11M SE PLENTYWOOD
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:25.9 ft. [7.9 m]
Total length:27.9 ft. [8.5 m]
Roadway width between curbs:20.3 ft. [6.2 m]
Deck width edge-to-edge:20.3 ft. [6.2 m]
Owner:County Highway Agency [02]
Year built:1940
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:100 [as of 2002]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 is scour critical; bridge foundations determined to be unstable. [3]
Sufficiency rating:47.3
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$50,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018PoorSatisfactoryFairPoor10047.3
August 2016PoorSatisfactoryFairPoor10047.3
August 2014PoorSatisfactoryFairPoor10047.3
December 2013PoorSatisfactoryFairPoor10047.3
January 2012PoorSatisfactorySatisfactoryPoor10047.3
August 2010PoorSatisfactorySatisfactorySerious10037.8
January 2010PoorSatisfactoryFairSerious10037.8
December 2007PoorSatisfactoryFairPoor10052.3
July 2006PoorSatisfactoryPoorPoor10052.3
December 2004PoorSatisfactoryPoorPoor10051.3
March 2002PoorFairPoorPoor10050.3
December 1999PoorFairPoorPoor10050.3
February 1998PoorFairPoorPoor10050.3
January 1996PoorGoodPoorPoor10049.3
November 1993PoorGoodPoorPoor3149.2
February 1992PoorGoodPoorPoor3149.5
February 1990PoorSatisfactoryPoorPoor3147.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.190019000
Substructure
Reinforced Concrete Abutmentlinear ft.72180540
Deck
Timber Decksq. ft.56053217110
Wearing Surfacessq. ft.22456157110