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IRR BIA RTE 13 over SOUTH FORK MILK RIVER

Map

Coordinates:
+48.85965, -113.01708
48°51'35" N, 113°01'01" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IRR BIA RTE 13 over SOUTH FORK MILK RIVER
Structure number:00000000000C130
Location:31KM NORTH BLACKFEET SCHL
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:24.9 ft. [7.6 m]
Total length:102.0 ft. [31.1 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:25.6 ft. [7.8 m]
Owner:Bureau of Indian Affairs [62]
Year built:1979
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:60 [as of 2016]
Truck traffic:20% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:39.2
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$119,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2016PoorFairFairPoor6039.2
October 2014PoorFairSatisfactoryPoor6038.2
October 2011PoorFairSatisfactoryPoor6067.3
May 2010PoorFairSatisfactoryPoor6067.3
October 2007FairFairSatisfactoryFair6083.4
October 2004FairSatisfactoryVery GoodGood6095.5
November 2002FairSatisfactoryVery GoodGood6096.5
August 2001PoorPoorVery GoodGood6093.5
May 1998PoorFairVery GoodPoor6068.3
September 1995FairFairVery GoodFair6084.4