SD022 over COBB CK


+44.74716, -96.49443
44°44'50" N, 96°29'40" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SD022 over COBB CK
Structure number:000000020193160
Location:9.3 E JCT SD 15
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:42.7 ft. [13.0 m]
Total length:133.5 ft. [40.7 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Owner:State Highway Agency [01]
Year built:1955
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Low slump Concrete [4]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:994 [as of 2017]
Truck traffic:19% 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:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
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]
Scour condition:Bridge is scour critical; bridge foundations determined to be unstable. [3]
Sufficiency rating:75.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairFairFairSatisfactory99475.9
May 2015FairSatisfactorySatisfactorySatisfactory96688.4
May 2013FairSatisfactorySatisfactorySatisfactory97588.4
May 2011FairSatisfactorySatisfactorySatisfactory89388.7
May 2009FairGoodSatisfactoryGood76589.1
May 2007FairGoodSatisfactoryGood93588.6
April 2005FairGoodSatisfactoryGood100088.4
June 2003FairGoodSatisfactoryGood100587.4
July 2001FairGoodSatisfactoryGood101787.4
August 1999FairGoodSatisfactoryGood95588.5
July 1999FairSatisfactorySatisfactoryGood95088.6
September 1997FairSatisfactorySatisfactoryGood96588.5
August 1995FairSatisfactorySatisfactoryGood85088.7
August 1993FairSatisfactorySatisfactoryGood77578.8
August 1991FairSatisfactorySatisfactoryGood64582.1