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TH 87 over OTTER TAIL RIVER

Map

Coordinates:
+46.73041, -95.69483
46°43'49" N, 95°41'41" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TH 87 over OTTER TAIL RIVER
Structure number:6674
Location:2.8 MI E OF JCT TH 10
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:14.8 ft. [4.5 m]
Total length:39.4 ft. [12.0 m]
Owner:State Highway Agency [01]
Year built:1947
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Number of main spans:3
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:3,850 [as of 2008]
Truck traffic:6% of total traffic
Structural 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 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]
Culvert condition:Moderate to major deterioration or disintegration, extensive cracking and leaching or spalls on concrete or masonry walls and slabs. Minor settlement or misalignment. Noticeable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection in one section, significant corrosion or deep pitting. [5]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:86.9
Estimated cost of work:$220,000,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
October 2017Fair5 out of 10385086.9
October 2015Fair6 out of 10385097.9
October 2013Fair6 out of 10385097.9
October 2011Fair6 out of 10385097.9
September 2009Fair6 out of 10385097.9
August 2007Fair6 out of 10285098.0
September 2005Good7 out of 10285098.0
September 2003Good7 out of 10335098.0
September 2001Good7 out of 10255093.6
September 1999Good7 out of 10105087.5
September 1997Good7 out of 10255088.1
September 1995Good7 out of 10140089.2
September 1994Good7 out of 10160089.1
October 1993Good7 out of 10160089.1
October 1992Good7 out of 10205088.1
October 1991Good7 out of 10205088.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Culvert
Reinforced Concrete Culvertlinear ft.1200107103