FAI 255 over Prairie Lake Ditch
GoodSt. Clair County, Illinois · Under S Main ST Dupo · Structure no. 082202000000000
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 32 ft
- 3 main spans
- Daily traffic
- 35,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FAI 255 over Prairie Lake Ditch is a concrete continuous culvert carrying FAI 255 over Prairie Lake Ditch in St. Clair County, Illinois. It was built in 1983, so it is 42 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 35,700 vehicles a day, roughly 18% of them trucks, projected to reach 39,289 by 2046. The structure is 32 ft (9.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAI 255 over Prairie Lake Ditch built?
It was built in 1983, making it 42 years old in 2025.
What condition is FAI 255 over Prairie Lake Ditch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.
How much traffic does FAI 255 over Prairie Lake Ditch carry?
About 35,700 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is FAI 255 over Prairie Lake Ditch?
The structure is 32 ft (9.7 m) long with a longest span of 11 ft (3.4 m).
Who owns FAI 255 over Prairie Lake Ditch?
It is owned by the State Highway Agency.