Structure 18200400000000 · Cumberland County, IL

Il 121 (fap 773) over Otter Creek

Carries Il 121 (fap 773) over Otter Creek, 3.0 Mi E 7 Mi Curve.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 4 of 9.

How ratings work
Culvertsets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 4/9

A culvert 24 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1933rebuilt 1971
Length24.0 ft7.3 m
Daily traffic1,600counted 2023
Last inspectedDecember 2024every 12 months

Location

StateIllinois
CountyCumberland
Location3.0 Mi E 7 Mi Curve
CarriesIl 121 (fap 773)
CrossesOtter Creek
Coordinates39.27271, -88.32299

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length24.0 ft (7.3 m)
Max Span11.2 ft (3.4 m)
Deck Width63.6 ft (19.4 m)
Deck Area141.6 sq m
Main Spans2
Year Built1933 (reconstructed 1971)

Traffic

Avg Daily Traffic1,600 (2023)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number018200400000000

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.

Nearby Bridges