I-74 (EB-SB) over MISSISSIPPI RIVER

Map

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

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]`

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

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
August 2018	Fair	Satisfactory	Fair	Satisfactory	33800	55.7
August 2016	Fair	Satisfactory	Fair	Satisfactory	36000	55.3
August 2014	Fair	Satisfactory	Fair	Satisfactory	35250	55.5
July 2012	Fair	Satisfactory	Fair	Satisfactory	30350	56.2
June 2010	Fair	Satisfactory	Fair	Satisfactory	33550	55.4
July 2008	Fair	Satisfactory	Fair	Satisfactory	33600	55.4
June 2006	Fair	Satisfactory	Fair	Satisfactory	35400	51.0
October 2004	Fair	Satisfactory	Fair	Satisfactory	35550	51.0
October 2002	Fair	Satisfactory	Fair	Satisfactory	38900	50.4
August 2000	Fair	Satisfactory	Fair	Satisfactory	36100	50.9
October 1997	Fair	Satisfactory	Fair	Satisfactory	13200	0.0
October 1993	Fair	Satisfactory	Fair	Satisfactory	33300	52.4
July 1990	Fair	Satisfactory	Fair	Satisfactory	29450	52.9