463rd Avenue over Trib. to Big Sioux River


+44.66783, -96.94649
44°40'04" N, 96°56'47" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:463rd Avenue over Trib. to Big Sioux River
Structure number:000000029270094
Location:2.6N of Dempster
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:9.8 ft. [3.0 m]
Total length:22.6 ft. [6.9 m]
Roadway width between curbs:31.5 ft. [9.6 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Owner:County Highway Agency [02]
Year built:1926
Year reconstructed:1973
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Number of main spans:2
Main spans material:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: June 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:125 [as of 2016]
Truck traffic:2% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:92.8

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
June 2018Fair6 out of 1012592.8
June 2016Fair6 out of 1012593.3
May 2014Fair6 out of 1012593.3
June 2012Fair6 out of 1012589.8
August 2010Fair6 out of 1012589.8
September 2008Fair6 out of 1012589.8
August 2006Fair6 out of 1012589.8
July 2004Fair6 out of 1012589.8
August 2002Good7 out of 1012587.8
July 2000Good7 out of 1012587.8
September 1998Poor4 out of 1012560.7
August 1996Fair6 out of 1012587.8
August 1994Fair6 out of 1012595.0
September 1992Fair6 out of 1012595.0
June 1990Fair6 out of 1012597.0