463rd Avenue over Big Sioux River


+44.59598, -96.94575
44°35'46" N, 96°56'45" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:463rd Avenue over Big Sioux River
Structure number:000000029270144
Location:2W & 1.6N of Estelline
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:48.9 ft. [14.9 m]
Total length:181.4 ft. [55.3 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:26.2 ft. [8.0 m]
Owner:County Highway Agency [02]
Year built:1953
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:4
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: June 2018

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:119 [as of 2016]
Truck traffic:2% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Better than present minimum criteria [7]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:59.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,643,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2018FairFairFairSatisfactory11959.5
June 2016FairFairSatisfactorySatisfactory11349.2
June 2014FairFairSatisfactorySatisfactory11385.1
July 2012FairFairSatisfactorySatisfactory11356.7
August 2010FairFairSatisfactorySatisfactory11356.7
August 2008FairFairSatisfactorySatisfactory11356.7
August 2006FairFairSatisfactorySatisfactory11356.7
July 2004FairSatisfactorySatisfactorySatisfactory11357.7
August 2002FairGoodSatisfactorySatisfactory11356.7
June 2000FairSatisfactorySatisfactorySatisfactory11355.0
September 1998FairGoodSatisfactorySatisfactory11355.0
August 1996FairFairGoodGood11354.0
August 1994FairFairGoodGood11353.3
September 1992FairFairGoodGood11366.8
May 1990FairFairGoodGood11366.8