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IRR - S 49 over TWO MEDICINE RIVER 001

Map

Coordinates:
+48.47037, -113.23685
48°28'13" N, 113°14'13" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IRR - S 49 over TWO MEDICINE RIVER 001
Structure number:L18203002+06001
Location:3M N EAST GLACIER
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:69.9 ft. [21.3 m]
Total length:144.0 ft. [43.9 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:33.1 ft. [10.1 m]
Skew angle:40°
Owner:State Highway Agency [01]
Year built:1966
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:3
Main spans material:Prestressed concrete [5]
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: March 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:944 [as of 2016]
Truck traffic:1% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
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:Better than present minimum criteria [7]
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:74.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017FairSatisfactoryVery GoodSatisfactory94474.7
April 2015FairSatisfactoryVery GoodSatisfactory81076.1
April 2013FairSatisfactoryVery GoodSatisfactory81076.1
April 2011FairSatisfactoryGoodSatisfactory81076.1
May 2009FairSatisfactoryGoodSatisfactory77077.5
March 2007FairSatisfactoryGoodSatisfactory10093.1
March 2005GoodGoodGoodGood10093.1
March 2003GoodGoodVery GoodGood10098.6
June 2001GoodGoodVery GoodGood10098.6
May 1999GoodGoodVery GoodGood10097.6
September 1996GoodGoodVery GoodGood10097.6
December 1993GoodGoodVery GoodGood25297.2
February 1991GoodGoodVery GoodGood75094.9

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Prestressed Concrete Girder/Beamlinear ft.577577000
Deck
Reinforced Concrete Decksq. ft.4,7584,750800
Substructure
Reinforced Concrete Pier Walllinear ft.8585000
Reinforced Concrete Abutmentlinear ft.112107500
Reinforced Concrete Pier Caplinear ft.8585000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2892751400
Steel Protective Coatingsq. ft.7717511505