Structure 81001100000000 · Rock Island County, IL

Fai 80 over Miss R Ill 84 & Rr

Carries Fai 80 over Miss R Ill 84 & Rr, W Of Rapids City.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,488 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

3,488 ft end to end, longest span 370 ft: about 9.7 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 multi-beam bridge.

Built1967rebuilt 1996
Length3487.9 ft1063.1 m
Daily traffic32,200counted 2023
Last inspectedOctober 2023every 24 months

Location

StateIllinois
CountyRock Island
LocationW Of Rapids City
CarriesFai 80
CrossesMiss R Ill 84 & Rr
Coordinates41.57602, -90.36247

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length3487.9 ft (1063.1 m)
Max Span370.1 ft (112.8 m)
Deck Width66.9 ft (20.4 m)
Deck Area21687.2 sq m
Main Spans16
Year Built1967 (reconstructed 1996)

Traffic

Avg Daily Traffic32,200 (2023)
Truck Traffic34%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number081001100000000

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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