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SD020 over LITTLE MISSOURI RV

Map

Coordinates:
+45.54818, -103.97032
45°32'53" N, 103°58'13" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SD020 over LITTLE MISSOURI RV
Structure number:000000032043278
Location:4.2 E MONTANA STATE LINE
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:129.9 ft. [39.6 m]
Total length:330.1 ft. [100.6 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:26.2 ft. [8.0 m]
Owner:State Highway Agency [01]
Year built:1951
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:4
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Low slump Concrete [4]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:122 [as of 2017]
Truck traffic:14% of total traffic
Deck condition:Satisfactory [6 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:Better than present minimum criteria [7]
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 is scour critical; bridge foundations determined to be unstable. [3]
Sufficiency rating:66.4
Recommended work:Bridge deck rehabilitation with only incidental widening. [36]
Estimated cost of work:$158,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairSatisfactorySatisfactoryFair12266.4
May 2015FairSatisfactorySatisfactoryFair12266.4
May 2013FairSatisfactorySatisfactoryFair12066.4
April 2011PoorSeriousSatisfactoryFair23559.6
April 2009PoorPoorSatisfactoryGood23373.2
April 2007FairFairSatisfactoryGood21075.5
May 2005PoorPoorSatisfactorySatisfactory21073.4
May 2003PoorPoorSatisfactorySatisfactory24073.2
September 2001PoorPoorSatisfactorySatisfactory17973.7
October 1999PoorPoorSatisfactorySatisfactory18873.7
October 1997FairSatisfactoryGoodGood22076.4
October 1995FairSatisfactoryGoodGood18076.0
October 1993GoodGoodGoodGood19255.5
January 1992GoodGoodVery GoodGood11056.6