+42.12500, -91.26944
42°07'30" N, 91°16'10" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:OLD IA 979 over CEDAR RIVER
Structure number:000000000018490
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:153.9 ft. [46.9 m]
Total length:1145.1 ft. [349.0 m]
Roadway width between curbs:26.2 ft. [8.0 m]
Deck width edge-to-edge:29.9 ft. [9.1 m]
Owner:County Highway Agency [02]
Year built:1948
Year reconstructed:1985
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:M 13.5 / H 15 [2]
Number of main spans:8
Main spans material:Steel continuous [4]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2016

Good/Fair/Poor Condition:Poor
Status:Posted for load [P]
Average daily traffic:590 [as of 2014]
Deck condition:Fair [5 out of 9]
Superstructure condition:Serious [3 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
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 minimum criteria [6]
Channel protection:Bank and embankment protection is severely undermined. River control devices have severe damage. Large deposits of debris are in the channel. [4]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:39.7 tons [36.1 metric tons]
Inventory rating:25.1 tons [22.8 metric tons]
Sufficiency rating:33.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201633.5PoorFairSeriousPoorSD590
May 201433.5PoorFairSeriousPoorSD590
July 201234.9PoorGoodSeriousPoorSD460
May 201034.5PoorGoodSeriousPoorSD460
May 200849.7PoorGoodPoorPoorSD680
June 200750.0PoorGoodFairPoorSD680
June 200546.3PoorGoodFairPoorSD760
July 200346.3PoorGoodFairPoorSD760
June 200151.1PoorGoodFairPoorSD610
June 199953.3PoorGoodGoodPoorSD610
November 199648.4PoorGoodGoodPoorSD830
March 199548.4PoorGoodGoodPoorSD830
June 199356.1PoorGoodGoodPoor-820
April 199156.1PoorGoodGoodPoor-820