Structure 87303300000000 · Shelby County, IL

Ch 26 over Robinson Creek

Carries Ch 26 over Robinson Creek, 2.5 M SW Shelbyville.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

26 ft end to end. Lengths and the car 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 slab bridge.

Built1909117 years old
Length25.9 ft7.9 m
Daily traffic350counted 2024
Last inspectedMarch 2023every 24 months

Location

StateIllinois
CountyShelby
Location2.5 M SW Shelbyville
CarriesCh 26
CrossesRobinson Creek
Coordinates39.37668, -88.83772

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length25.9 ft (7.9 m)
Max Span24.9 ft (7.6 m)
Deck Width25.6 ft (7.8 m)
Deck Area61.6 sq m
Main Spans1
Year Built1909

Traffic

Avg Daily Traffic350 (2024)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number087303300000000

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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