Structure 102006500000000 · Woodford County, IL

Ill 26 over Blalock Creek

Carries Ill 26 over Blalock Creek, 14.75 Mi S Of Ill 17.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT79 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

79 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 multi-beam bridge.

Built199135 years old
Length78.7 ft24 m
Daily traffic2,800counted 2023
Last inspectedMarch 2024every 24 months

Location

StateIllinois
CountyWoodford
Location14.75 Mi S Of Ill 17
CarriesIll 26
CrossesBlalock Creek
Coordinates40.84168, -89.50081

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length78.7 ft (24 m)
Max Span76.4 ft (23.3 m)
Deck Width35.1 ft (10.7 m)
Deck Area256.8 sq m
Main Spans1
Year Built1991

Traffic

Avg Daily Traffic2,800 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number102006500000000

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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