TH 4 over DITCH


+43.50694, -94.78285
43°30'25" N, 94°46'58" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:TH 4 over DITCH
Structure number:3572
Location:0.4 MI N OF IOWA ST LINE
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:12.5 ft. [3.8 m]
Total length:27.9 ft. [8.5 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1937
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:2
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: July 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:1,050 [as of 2016]
Truck traffic:20% 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 minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:84.4
Estimated cost of work:$88,000,000

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
July 2018Fair5 out of 10105084.4
July 2016Fair5 out of 1080083.6
July 2014Fair5 out of 1080083.6
July 2012Fair5 out of 1080083.6
July 2010Fair5 out of 1080083.6
July 2008Fair5 out of 1080083.6
August 2007Fair6 out of 1093094.6
June 2006Fair6 out of 1093094.6
May 2004Fair6 out of 1085094.7
October 2002Fair6 out of 1083090.9
June 2001Fair6 out of 1083090.9
October 1999Fair6 out of 1098090.6
October 1998Fair6 out of 1083090.7
August 1997Fair6 out of 1083092.3
September 1996Fair6 out of 1088092.3
June 1995Fair6 out of 1088090.3
July 1994Fair6 out of 1061094.3
October 1993Fair6 out of 1061094.3
August 1992Fair6 out of 1077090.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.166083830