Structure 70461400000000 · Moultrie County, IL

Tr 8 over Marrowbone Creek

Carries Tr 8 over Marrowbone Creek, 2.2 Mi NW Bethany.

Overall conditionFair

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

How ratings work
Deck9/9 · Excellent
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 39 ft across with 3 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.

Built195769 years old
Length39.0 ft11.9 m
Daily traffic100counted 2020
Last inspectedJanuary 2025every 24 months

Location

StateIllinois
CountyMoultrie
Location2.2 Mi NW Bethany
CarriesTr 8
CrossesMarrowbone Creek
Coordinates39.66443, -88.76998

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length39.0 ft (11.9 m)
Max Span12.1 ft (3.7 m)
Deck Width21.7 ft (6.6 m)
Deck Area78.5 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic100 (2020)
Truck Traffic1%
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 Number070461400000000

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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