+42.66248, -95.47514
42°39'45" N, 95°28'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:590TH ST over MAPLE RIVER
Structure number:000000000107970
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:65.0 ft. [19.8 m]
Total length:67.9 ft. [20.7 m]
Roadway width between curbs:18.0 ft. [5.5 m]
Deck width edge-to-edge:18.0 ft. [5.5 m]
Owner:County Highway Agency [02]
Year built:1919
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Poor
Status:Posted for other load-capacity restriction [R]
Average daily traffic:30 [as of 2015]
Deck condition:Poor [4 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:45.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017PoorPoorFairFair3045.8
August 2015PoorPoorSatisfactoryFair3045.8
August 2013PoorPoorSatisfactoryFair3045.8
May 2011PoorPoorSatisfactoryFair3045.8
August 2009PoorPoorSatisfactoryFair3045.6
May 2008PoorPoorGoodSatisfactory3045.1
April 2007PoorPoorGoodSatisfactory7047.3
May 2006PoorPoorGoodSatisfactory7047.3
April 2005FairFairGoodSatisfactory7049.3
August 2004FairFairGoodSatisfactory7049.3
August 2003FairGoodGoodSatisfactory7050.3
August 2002FairGoodGoodSatisfactory2550.3
August 2001FairGoodGoodSatisfactory2550.3
June 2000FairGoodGoodSatisfactory2550.3
August 1999FairGoodGoodSatisfactory4050.3
August 1998FairGoodGoodSatisfactory4050.3
August 1997FairGoodGoodSatisfactory4050.3
August 1996FairGoodGoodSatisfactory4050.3
May 1995FairGoodGoodSatisfactory4050.3
August 1994FairGoodGoodSatisfactory2048.0
August 1993GoodGoodGoodGood2048.0
August 1992GoodGoodGoodGood2048.0
August 1991GoodGoodGoodGood2048.0