Structure 44305500000000 · Johnson County, IL

Twp RD 111 over Dutchman Creek

Carries Twp RD 111 over Dutchman Creek, Nw1/4 Sec30 T12s R3e.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

36 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 slab bridge.

Built197650 years old
Length36.1 ft11 m
Daily traffic225counted 2021
Last inspectedFebruary 2025every 24 months

Location

StateIllinois
CountyJohnson
LocationNw1/4 Sec30 T12s R3e
CarriesTwp RD 111
CrossesDutchman Creek
Coordinates37.44862, -88.92510

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length36.1 ft (11 m)
Max Span34.1 ft (10.4 m)
Deck Width26.2 ft (8 m)
Deck Area88 sq m
Main Spans1
Year Built1976

Traffic

Avg Daily Traffic225 (2021)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number044305500000000

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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