Structure 99327500000000 · Will County, IL

W. Offner Road over Black Walnut Creek

Carries W. Offner Road over Black Walnut Creek, .5 M E Crawford AVE.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 26 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built201214 years old
Length26.2 ft8 m
Daily traffic175counted 2023
Last inspectedJuly 2022every 48 months

Location

StateIllinois
CountyWill
Location.5 M E Crawford AVE
CarriesW. Offner Road
CrossesBlack Walnut Creek
Coordinates41.38374, -87.70063

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length26.2 ft (8 m)
Deck Area72.8 sq m
Main Spans2
Year Built2012

Traffic

Avg Daily Traffic175 (2023)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number099327500000000

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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