US 20 over MISS RV,BN RR,ILL 35


+42.49187, -90.64392
42°29'31" N, 90°38'38" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 over MISS RV,BN RR,ILL 35
Structure number:043000100000000
Old structure number:000043000109983 (from 1992 edition)
Purpose:Carries highway over highway, waterway, and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:845.2 ft. [257.6 m]
Total length:5761.4 ft. [1756.0 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:30.5 ft. [9.3 m]
Vertical clearance below bridge:49.9 ft. [15.2 m]
Owner:State Highway Agency [01]
Year built:1943
Year reconstructed:1992
Historic significance:Bridge is on the National Register of Historic Places [1]
Design load:M 13.5 / H 15 [2]
Number of main spans:3
Main spans material:Steel continuous [4]
Main spans design:Arch - Thru [12]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: September 2013

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:18,500 [as of 2013]
Truck traffic:10% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Fair [5 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]
Underclearances appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:In place but re-evaluation of design suggested [4]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:35.6 tons [32.4 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:51.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$36,498,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201351.0FairGoodFairSatisfactory-18500
October 201152.0FairGoodFairSatisfactory-17000
October 200952.0FairGoodFairSatisfactory-17000
October 200752.0FairGoodFairSatisfactory-19400
October 200352.0FairGoodFairSatisfactory-18900
August 200050.0FairGoodFairSatisfactory-18600
February 199946.0FairGoodFairSatisfactory-19500
January 199746.0FairGoodFairSatisfactory-20800
June 199542.6FairGoodFairSatisfactoryFO18200
December 199342.6FairGoodFairSatisfactoryFO16900
June 198832.0PoorPoorPoorPoorSD19000