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TWP 170 over LITTLE SIOUX RIVER

Map

Coordinates:
+43.61914, -95.27467
43°37'09" N, 95°16'29" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TWP 170 over LITTLE SIOUX RIVER
Structure number:95011
Location:0.2 MI N OF JCT CSAH 34
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:11.5 ft. [3.5 m]
Total length:45.6 ft. [13.9 m]
Owner:Town or Township Highway Agency [03]
Year built:1979
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:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]
Wearing surface:Gravel [8]

Latest Available Inspection: November 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:15 [as of 1988]
Structural appraisal:Equal to present desirable criteria [8]
Water adequacy appraisal:Better than present minimum criteria [7]
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:No noticeable or noteworthy deficiencies which affect the condition of the culvert. Insignificant scrape marks caused by drift. [8]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:59.3 tons [53.9 metric tons]
Inventory rating:39.5 tons [35.9 metric tons]
Sufficiency rating:100.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$98,000

Previous Inspections

DateSuff. RatingConditionCulvert ConditionSD/FOADT
November 2015100.0Good8 out of 10-15
November 2011100.0Good8 out of 10-15
December 200798.0Good8 out of 10-15
January 2006100.0Good8 out of 10-15
December 2003100.0Good8 out of 10-15
February 2002100.0Good8 out of 10-15
December 199999.0Good8 out of 10-15
December 199899.0Good8 out of 10-15
December 1997100.0Good8 out of 10-15
December 1995100.0Good8 out of 10-15
December 1994100.0Good8 out of 10-15
December 1993100.0Good8 out of 10-15
December 1992100.0Good8 out of 10-15
December 199197.8Good8 out of 10-15