+46.45355, -109.50299
46°27'13" N, 109°30'11" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:S 297 over ROBERTS CREEK
Structure number:S00297008+04001
Location:8M N SHAWMUT
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:69.9 ft. [21.3 m]
Total length:70.9 ft. [21.6 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:29.9 ft. [9.1 m]
Owner:State Highway Agency [01]
Year built:1974
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Prestressed concrete [5]
Main span 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: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:60 [as of 2015]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Better than present minimum criteria [7]
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:96.8

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
January 2017FairSatisfactoryGoodGood6096.8
January 2013GoodGoodGoodGood5097.9
January 2009GoodGoodGoodGood5096.9
February 2005GoodVery GoodGoodGood4098.9
December 2003GoodVery GoodGoodGood6096.8
June 2001GoodVery GoodGoodGood6097.8
February 1997GoodVery GoodGoodGood6098.8
January 1993GoodVery GoodVery GoodVery Good4896.8
January 1991GoodVery GoodVery GoodVery Good6896.8

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.279279000
Reinforced Concrete Decksq. ft.2,1311,0651,06600
Reinforced Concrete Abutmentlinear ft.8280200
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.141134700
Steel Protective Coatingsq. ft.2222000220