Structure 62504200000000 · Marshall County, IL

Tr 34 (th-s14) over Creek

Carries Tr 34 (th-s14) over Creek, T12n-r9e-4pm Sec 3.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 3 of 9.

How ratings work
Culvertsets the rating3/9 · Serious
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 3/9

A culvert 26 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built1974rebuilt 1982
Length25.9 ft7.9 m
Daily traffic75counted 2024
Last inspectedAugust 2023every 24 months

Location

StateIllinois
CountyMarshall
LocationT12n-r9e-4pm Sec 3
CarriesTr 34 (th-s14)
CrossesCreek
Coordinates41.04925, -89.46648

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length25.9 ft (7.9 m)
Max Span11.2 ft (3.4 m)
Deck Width22.0 ft (6.7 m)
Deck Area52.9 sq m
Main Spans2
Year Built1974 (reconstructed 1982)

Traffic

Avg Daily Traffic75 (2024)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number062504200000000

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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