Structure 81018800000000 · Rock Island County, IL

Il 92 SB (cent Frw over Fai 280

Carries Il 92 SB (cent Frw over Fai 280, Centennial Frwy R.i..

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT286 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

286 ft end to end, longest span 142 ft: about 4 semi-trucks nose to tail. 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.

Built201214 years old
Length286.4 ft87.3 m
Daily traffic13,100counted 2023
Last inspectedDecember 2024every 24 months

Location

StateIllinois
CountyRock Island
LocationCentennial Frwy R.i.
CarriesIl 92 SB (cent Frw
CrossesFai 280
Coordinates41.46430, -90.61451

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length286.4 ft (87.3 m)
Max Span141.7 ft (43.2 m)
Deck Width51.2 ft (15.6 m)
Deck Area1361.9 sq m
Main Spans2
Year Built2012

Traffic

Avg Daily Traffic13,100 (2023)
Truck Traffic13%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number081018800000000

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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