Structure 99333000000000 · Will County, IL

Peotone-beecher RD over Black Walnut Creek

Carries Peotone-beecher RD over Black Walnut Creek, 1.5m.e.of Il-50.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 5/9 · sets the rating

68 ft end to end, longest span 34 ft. 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.

Built1988rebuilt 2003
Length67.9 ft20.7 m
Daily traffic2,750counted 2023
Last inspectedMarch 2023every 24 months

Location

StateIllinois
CountyWill
Location1.5m.e.of Il-50
CarriesPeotone-beecher RD
CrossesBlack Walnut Creek
Coordinates41.33970, -87.75621

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length67.9 ft (20.7 m)
Max Span34.1 ft (10.4 m)
Deck Width45.9 ft (14 m)
Deck Area289.8 sq m
Main Spans2
Year Built1988 (reconstructed 2003)

Traffic

Avg Daily Traffic2,750 (2023)
Truck Traffic9%
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 Critical8 — Stable, low risk
Structure Number099333000000000

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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