305 TH / E57 over RACCOON RIVER


+41.91385, -94.27598
41°54'50" N, 94°16'34" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:305 TH / E57 over RACCOON RIVER
Structure number:000000000161620
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:82.0 ft. [25.0 m]
Total length:379.9 ft. [115.8 m]
Roadway width between curbs:22.6 ft. [6.9 m]
Deck width edge-to-edge:24.0 ft. [7.3 m]
Owner:County Highway Agency [02]
Year built:1940
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:5
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: July 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:170 [as of 2016]
Truck traffic:15% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 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: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 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:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:67.8
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2018FairSatisfactorySatisfactorySatisfactory17067.8
August 2016FairSatisfactorySatisfactorySatisfactory20067.8
July 2014FairSatisfactorySatisfactorySatisfactory20067.8
June 2012PoorFairFairPoor20040.6
April 2010FairFairFairFair20054.4
May 2008FairFairFairFair20054.4
June 2006FairFairSatisfactoryFair21054.7
June 2004FairFairSatisfactorySatisfactory19064.8
January 2002FairFairSatisfactorySatisfactory19064.8
February 2000FairFairSatisfactorySatisfactory19064.6
February 1998FairFairSatisfactorySatisfactory18064.7
June 1996FairFairSatisfactorySatisfactory18064.7
May 1994PoorFairSatisfactoryPoor18036.4
June 1991FairSatisfactorySatisfactoryFair17051.6