Structure 11327300000000 · Christian County, IL

Mont. Co Tr 75b over Ohlman Branch

Carries Mont. Co Tr 75b over Ohlman Branch, 0.3 Mi NW Ohlman.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT44 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

44 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 multi-beam bridge.

Built194086 years old
Length44.0 ft13.4 m
Daily traffic150counted 2020
Last inspectedDecember 2024every 24 months

Location

StateIllinois
CountyChristian
Location0.3 Mi NW Ohlman
CarriesMont. Co Tr 75b
CrossesOhlman Branch
Coordinates39.34881, -89.22701

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length44.0 ft (13.4 m)
Max Span42.7 ft (13 m)
Deck Width23.0 ft (7 m)
Deck Area93.8 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic150 (2020)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number011327300000000

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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