Structure 81992200000000 · Rock Island County, IL

I 74 EB over Mississippi River

Carries I 74 EB over Mississippi River, In Bettendorf.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,396 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

3,396 ft end to end: about 9.4 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through arch.

Built20215 years old
Length3396.0 ft1035.1 m
Daily traffic39,050counted 2023
Last inspectedAugust 2024every 24 months

Location

StateIllinois
CountyRock Island
LocationIn Bettendorf
CarriesI 74 EB
CrossesMississippi River
Coordinates41.51904, -90.51169

Physical Characteristics

MaterialSteel
DesignArch - Thru
Total Length3396.0 ft (1035.1 m)
Max Span794.9 ft (242.3 m)
Deck Width75.8 ft (23.1 m)
Deck Area23910.8 sq m
Main Spans1
Year Built2021

Traffic

Avg Daily Traffic39,050 (2023)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number081992200000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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