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IRR - S 451 over LITTLE BIGHORN RIVER

Map

Coordinates:
+45.18083, -107.38795
45°10'51" N, 107°23'17" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IRR - S 451 over LITTLE BIGHORN RIVER
Structure number:S00451024+09811
Location:4M N WYOLA
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:60.0 ft. [18.3 m]
Total length:120.1 ft. [36.6 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:35.4 ft. [10.8 m]
Skew angle:35°
Owner:State Highway Agency [01]
Year built:1950
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:470 [as of 2015]
Truck traffic:1% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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 foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:82.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2016FairGoodSatisfactorySatisfactory47082.3
October 2014FairGoodSatisfactorySatisfactory141068.4
October 2012FairGoodSatisfactorySatisfactory141068.4
October 2010FairGoodSatisfactorySatisfactory141067.4
October 2008FairGoodSatisfactorySatisfactory144067.3
August 2007FairGoodSatisfactorySatisfactory145067.3
July 2005FairGoodSatisfactorySatisfactory143069.3
September 2004FairGoodSatisfactorySatisfactory146069.3
December 2002FairGoodFairSatisfactory188058.3
March 2001FairGoodFairGood153058.3
February 1999FairGoodFairGood153058.3
January 1997FairGoodFairVery Good98760.3
December 1994FairGoodFairVery Good92868.9
September 1992FairGoodFairGood55976.2
February 1991FairGoodFairGood85169.6

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.6005643600
Steel Protective Coatingsq. ft.5,4004,3205405400
Deck
Reinforced Concrete Decksq. ft.4,2411,7392,50200
Substructure
Reinforced Concrete Pier Walllinear ft.3603600
Reinforced Concrete Abutmentlinear ft.8573570
Reinforced Concrete Pier Caplinear ft.3939000
Joints
Assembly without Seal Jointlinear ft.8508500
Bearings
Movable Bearingeach106400
Steel Protective Coatingsq. ft.2001280
Fixed Bearingeach53200
Steel Protective Coatingsq. ft.1001000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2401687200
Steel Protective Coatingsq. ft.48003361440