Structure 81008900000000 · Rock Island County, IL

Campbell Island RD over Branch Of Miss River

Carries Campbell Island RD over Branch Of Miss River, 0.3 Mi NW Of Ill 84.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT360 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

360 ft end to end, longest span 103 ft: about 5 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.

Built1938rebuilt 1999
Length359.9 ft109.7 m
Daily traffic800counted 2020
Last inspectedJune 2023every 24 months

Location

StateIllinois
CountyRock Island
Location0.3 Mi NW Of Ill 84
CarriesCampbell Island RD
CrossesBranch Of Miss River
Coordinates41.53838, -90.42642

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length359.9 ft (109.7 m)
Max Span103.0 ft (31.4 m)
Deck Width39.7 ft (12.1 m)
Deck Area1327.4 sq m
Main Spans4
Year Built1938 (reconstructed 1999)

Traffic

Avg Daily Traffic800 (2020)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number081008900000000

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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