Structure 38412500000000 · Iroquois County, IL

Tr 339 over Pigeon CR

Carries Tr 339 over Pigeon CR, .5 Mi E. Cissa Park.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT97 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

97 ft end to end, longest span 36 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 channel-beam bridge.

Built196759 years old
Length97.1 ft29.6 m
Daily traffic150counted 2022
Last inspectedAugust 2024every 24 months

Location

StateIllinois
CountyIroquois
Location.5 Mi E. Cissa Park
CarriesTr 339
CrossesPigeon CR
Coordinates40.57271, -87.87424

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length97.1 ft (29.6 m)
Max Span36.1 ft (11 m)
Deck Width26.2 ft (8 m)
Deck Area236.8 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic150 (2022)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number038412500000000

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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