+45.30331, -99.79078
45°18'12" N, 99°47'27" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SD047 over SWAN LAKE CK
Structure number:000000065330201
Location:3.9 N JCT SD 20
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:23.3 ft. [7.1 m]
Total length:66.9 ft. [20.4 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:28.2 ft. [8.6 m]
Owner:State Highway Agency [01]
Year built:1951
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:3
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:396 [as of 2017]
Truck traffic:23% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry 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 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]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Sufficiency rating:85.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairSatisfactorySatisfactoryGood39685.9
September 2015FairSatisfactorySatisfactoryGood46984.7
September 2013FairSatisfactorySatisfactoryGood50584.6
September 2011FairSatisfactorySatisfactoryGood49077.9
August 2009FairSatisfactorySatisfactoryGood49577.9
August 2007FairSatisfactorySatisfactoryGood44578.0
August 2005FairSatisfactorySatisfactoryGood43078.0
August 2003FairSatisfactorySatisfactoryGood45277.0
November 2001FairSatisfactorySatisfactoryGood43677.0
October 1999FairSatisfactorySatisfactoryGood48276.9
January 1998GoodGoodGoodGood55276.7
December 1995GoodGoodVery GoodGood44375.7
December 1993GoodGoodVery GoodGood30471.6
February 1992GoodGoodVery GoodVery Good35271.4