Structure 102000700000000 · Woodford County, IL

US 24 over Walnut Creek

Carries US 24 over Walnut Creek, 0.5 Mi W Of Ill 117.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

171 ft end to end, longest span 64 ft: about 2 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.

Built1963rebuilt 1985
Length170.9 ft52.1 m
Daily traffic7,150counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateIllinois
CountyWoodford
Location0.5 Mi W Of Ill 117
CarriesUS 24
CrossesWalnut Creek
Coordinates40.71989, -89.28365

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length170.9 ft (52.1 m)
Max Span64.0 ft (19.5 m)
Deck Width39.7 ft (12.1 m)
Deck Area630.4 sq m
Main Spans3
Year Built1963 (reconstructed 1985)

Traffic

Avg Daily Traffic7,150 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number102000700000000

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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