Structure 40323100000000 · Jasper County, IL

Tr 312 over Panther Creek

Carries Tr 312 over Panther Creek, 2.5 Mi SE Yale.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT124 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

124 ft end to end, longest span 40 ft. Lengths and the semi-truck 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.

Built199927 years old
Length124.3 ft37.9 m
Daily traffic100counted 2021
Last inspectedFebruary 2021every 48 months

Location

StateIllinois
CountyJasper
Location2.5 Mi SE Yale
CarriesTr 312
CrossesPanther Creek
Coordinates39.09969, -87.98617

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length124.3 ft (37.9 m)
Max Span40.0 ft (12.2 m)
Deck Width27.9 ft (8.5 m)
Deck Area322.1 sq m
Main Spans3
Year Built1999

Traffic

Avg Daily Traffic100 (2021)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2021
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number040323100000000

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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