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S 91 over BOULDER RIVER OVERFLOW

Map

Coordinates:
+45.83461, -109.93522
45°50'05" N, 109°56'07" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:S 91 over BOULDER RIVER OVERFLOW
Structure number:P00091002+06681
Location:BIG TIMBER
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:24.9 ft. [7.6 m]
Total length:24.9 ft. [7.6 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:29.5 ft. [9.0 m]
Owner:State Highway Agency [01]
Year built:1937
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
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: December 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,996 [as of 2017]
Truck traffic:5% of total traffic
Deck condition:Good [7 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: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:61.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2018FairGoodSatisfactoryFair199661.5
December 2016FairGoodGoodFair184061.7
December 2014FairGoodGoodFair169063.8
December 2012FairSatisfactoryGoodSatisfactory169074.0
December 2010GoodGoodGoodGood169074.0
December 2008GoodGoodGoodGood163074.1
December 2006GoodGoodGoodGood202072.8
January 2006GoodGoodGoodGood207070.3
October 2003GoodVery GoodGoodGood182069.5
March 2001GoodVery GoodGoodGood182069.5
December 1999GoodVery GoodGoodGood164069.7
February 1997GoodVery GoodGoodGood141969.8
May 1995FairVery GoodGoodFair141961.4
February 1993FairVery GoodSatisfactoryFair155161.7
February 1991FairVery GoodFairSatisfactory175463.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Timber Girder/Beamlinear ft.427892141240
Substructure
Timber Abutmentlinear ft.105941100
Timber Pileeach1201020
Timber Pier Caplinear ft.56366140
Deck
Timber Decksq. ft.743743000
Wearing Surfacessq. ft.7437130300
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2626000
Steel Protective Coatingsq. ft.2626000
Reinforced Concrete Bridge Raillinear ft.2626000