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I-74 (EB-SB) over MISSISSIPPI RIVER

Map

Coordinates:
+41.52221, -90.51331
41°31'20" N, 90°30'48" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-74 (EB-SB) over MISSISSIPPI RIVER
Structure number:000000000047290
Location:IN BETTENDORF
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:740.2 ft. [225.6 m]
Total length:3393.2 ft. [1034.2 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:27.2 ft. [8.3 m]
Vertical clearance above deck:17.1 ft. [5.2 m]
Vertical clearance below bridge:65.6 ft. [20.0 m]
Owner:State Highway Agency [01]
Year built:1960
Year reconstructed:1975
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:3
Main spans material:Steel continuous [4]
Main spans design:Suspension [13]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:33,800 [as of 2018]
Truck traffic:4% of total traffic
Deck condition:Satisfactory [6 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:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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:None present but re-evaluation suggested [5]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:55.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairSatisfactoryFairSatisfactory3380055.7
August 2016FairSatisfactoryFairSatisfactory3600055.3
August 2014FairSatisfactoryFairSatisfactory3525055.5
July 2012FairSatisfactoryFairSatisfactory3035056.2
June 2010FairSatisfactoryFairSatisfactory3355055.4
July 2008FairSatisfactoryFairSatisfactory3360055.4
June 2006FairSatisfactoryFairSatisfactory3540051.0
October 2004FairSatisfactoryFairSatisfactory3555051.0
October 2002FairSatisfactoryFairSatisfactory3890050.4
August 2000FairSatisfactoryFairSatisfactory3610050.9
October 1997FairSatisfactoryFairSatisfactory132000.0
October 1993FairSatisfactoryFairSatisfactory3330052.4
July 1990FairSatisfactoryFairSatisfactory2945052.9