FAI 255 SB over Harding Ditch North
GoodSt. Clair County, Illinois · 1.9MI N FAI 64 · Structure no. 082024600000000
- Built
- 1985
- 40 years old, rebuilt 2020
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 343 ft
- 3 main spans
- Daily traffic
- 21,750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FAI 255 SB over Harding Ditch North is a steel continuous stringer/multi-beam or girder carrying FAI 255 SB over Harding Ditch North in St. Clair County, Illinois. It was built in 1985 and reconstructed in 2020, so it is 40 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 21,750 vehicles a day, roughly 15% of them trucks, projected to reach 21,917 by 2046. The structure is 343 ft (104.5 m) long and 59 ft wide. 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAI 255 SB over Harding Ditch North built?
It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2020.
What condition is FAI 255 SB over Harding Ditch North 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 SB over Harding Ditch North carry?
About 21,750 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is FAI 255 SB over Harding Ditch North?
The structure is 343 ft (104.5 m) long with a longest span of 113 ft (34.4 m) and a deck 59 ft wide.
Who owns FAI 255 SB over Harding Ditch North?
It is owned by the State Highway Agency.