Structure 99465000000000 · Will County, IL

Highland RD over Black Walnut Creek

Carries Highland RD over Black Walnut Creek, 0.2 Mi N Pauling RD.

Overall conditionGood

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

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 8/9 · sets the rating

49 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 box-beam bridge.

Built1978rebuilt 2024
Length48.9 ft14.9 m
Daily traffic200counted 2023
Last inspectedJuly 2024every 24 months

Location

StateIllinois
CountyWill
Location0.2 Mi N Pauling RD
CarriesHighland RD
CrossesBlack Walnut Creek
Coordinates41.40064, -87.67999

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length48.9 ft (14.9 m)
Max Span46.9 ft (14.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area150.5 sq m
Main Spans1
Year Built1978 (reconstructed 2024)

Traffic

Avg Daily Traffic200 (2023)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number099465000000000

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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