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SD020 over VALLEY CK

Map

Coordinates:
+45.54934, -103.95444
45°32'58" N, 103°57'16" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SD020 over VALLEY CK
Structure number:000000032051277
Location:5.0 E MONTANA STATE LINE
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:39.0 ft. [11.9 m]
Total length:162.4 ft. [49.5 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:27.2 ft. [8.3 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1950
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:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 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: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:79.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$627,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairFairSatisfactoryGood12279.2
May 2015FairFairSatisfactoryGood12279.2
May 2013FairFairSatisfactoryGood12079.2
May 2011PoorSeriousSatisfactorySatisfactory23577.0
May 2009PoorSeriousSatisfactorySatisfactory23377.0
April 2007PoorSeriousSatisfactorySatisfactory21077.3
May 2005FairGoodSatisfactoryGood21082.4
May 2003PoorSeriousSatisfactoryGood24077.3
September 2001PoorSeriousSatisfactoryGood17977.9
October 1999PoorSeriousSatisfactoryGood18877.8
October 1997PoorPoorVery GoodGood22079.6
October 1995PoorPoorVery GoodGood18079.4
October 1993FairSatisfactoryVery GoodGood19287.7
January 1992GoodVery GoodVery GoodGood11087.8