+42.67223, -91.71295
42°40'20" N, 91°42'47" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:30TH ST. over UNAMED CR
Structure number:000000000149340
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:24.0 ft. [7.3 m]
Total length:25.9 ft. [7.9 m]
Roadway width between curbs:18.0 ft. [5.5 m]
Deck width edge-to-edge:20.0 ft. [6.1 m]
Skew angle:30°
Owner:County Highway Agency [02]
Year built:1923
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Main span material:Concrete [1]
Main span design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Gravel [8]

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:35 [as of 2017]
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:88.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2017FairSatisfactorySatisfactorySatisfactory3588.0
October 2015FairSatisfactorySatisfactorySatisfactory5088.0
October 2013FairSatisfactorySatisfactorySatisfactory5089.0
October 2011FairSatisfactoryVery GoodGood5089.0
August 2009FairSatisfactoryVery GoodGood5089.0
August 2007FairSatisfactoryVery GoodGood5089.0
August 2005FairSatisfactoryVery GoodGood5089.0
July 2003FairSatisfactoryVery GoodVery Good5089.0
July 2001FairSatisfactoryVery GoodVery Good5089.0
August 1999FairSatisfactoryVery GoodVery Good4089.0
August 1997FairSatisfactoryVery GoodVery Good4089.0
May 1995FairSatisfactoryVery GoodVery Good4089.0
July 1993GoodVery GoodVery GoodVery Good5089.0
August 1991GoodVery Good-Very Good5075.6