US 51 (fap 322) over Flat Creek
GoodMarion County, Illinois · .4 MI S Fayette C L · Structure no. 061000100000000
- Built
- 1960
- 65 years old, rebuilt 1996
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 2,650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 51 (fap 322) over Flat Creek is a steel continuous stringer/multi-beam or girder carrying US 51 (fap 322) over Flat Creek in Marion County, Illinois. It was built in 1960 and reconstructed in 1996, so it is 65 years old, older 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 2,650 vehicles a day, roughly 22% of them trucks, projected to reach 2,778 by 2046. The structure is 142 ft (43.3 m) long and 43 ft wide. If it were closed, the detour would be 51 mi (82 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 51 (fap 322) over Flat Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1996.
What condition is US 51 (fap 322) over Flat Creek 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 US 51 (fap 322) over Flat Creek carry?
About 2,650 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is US 51 (fap 322) over Flat Creek?
The structure is 142 ft (43.3 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.
Who owns US 51 (fap 322) over Flat Creek?
It is owned by the State Highway Agency.