Structure 15325700000000 · Coles County, IL

Tr 273 over Clear Creek

Carries Tr 273 over Clear Creek, 0.8 Mi N Trilla.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

46 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.

Built198244 years old
Length45.9 ft14 m
Daily traffic100counted 2024
Last inspectedJanuary 2025every 24 months

Location

StateIllinois
CountyColes
Location0.8 Mi N Trilla
CarriesTr 273
CrossesClear Creek
Coordinates39.38879, -88.35225

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length45.9 ft (14 m)
Max Span44.9 ft (13.7 m)
Deck Width24.3 ft (7.4 m)
Deck Area103.6 sq m
Main Spans1
Year Built1982

Traffic

Avg Daily Traffic100 (2024)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number015325700000000

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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