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S MONTANA ST over SILVER BOW CREEK

Map

Coordinates:
+45.99572, -112.53905
45°59'45" N, 112°32'21" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:S MONTANA ST over SILVER BOW CREEK
Structure number:U01805000+05711
Location:BUTTE-S MONTANA ST
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:30.8 ft. [9.4 m]
Total length:30.8 ft. [9.4 m]
Roadway width between curbs:65.9 ft. [20.1 m]
Deck width edge-to-edge:74.8 ft. [22.8 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1970
Year reconstructed:2003
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Concrete [1]
Main span design:Slab [01]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:14,630 [as of 2016]
Deck condition:Satisfactory [6 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: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 the assessed or calculated scour condition. [8]
Sufficiency rating:92.3

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairSatisfactorySatisfactorySatisfactory1463092.3
July 2015FairSatisfactoryGoodGood1887092.1
July 2013FairSatisfactoryGoodGood1887093.1
August 2011FairSatisfactoryGoodGood1887092.1
August 2009FairSatisfactoryGoodGood1474092.5
August 2007GoodGoodGoodGood1521093.5
August 2006GoodGoodGoodGood1521093.5
June 2004GoodGoodGoodGood1637093.4
August 2001FairFairFairFair1722078.0
February 1999PoorPoorPoorFair1594064.7
February 1997PoorPoorPoorFair1531764.8
February 1995FairFairFairFair1496083.7
March 1993FairFairFairFair1536483.7
December 1990FairFairFairFair1488883.7

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Substructure
Reinforced Concrete Abutmentlinear ft.2231853530
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.3030000
Steel Protective Coatingsq. ft.5656000
Reinforced Concrete Bridge Raillinear ft.62313100
Deck
Reinforced Concrete Slabsq. ft.2,3252,325000