FAS 579 over Prairie Creek
PoorCass County, Illinois · 1 MI S Hagener · Structure no. 009302600000000
- Built
- 1960
- 65 years old, rebuilt 1989
- Condition
- Poor
- inspected January 2023
- Type
- Channel Beam
- Concrete
- Length
- 76 ft
- 3 main spans
- Daily traffic
- 1,750
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
FAS 579 over Prairie Creek is a concrete channel beam carrying FAS 579 over Prairie Creek in Cass County, Illinois. It was built in 1960 and reconstructed in 1989, 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,750 vehicles a day, roughly 13% of them trucks, projected to reach 1,768 by 2046. The structure is 76 ft (23.2 m) long and 34 ft wide. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAS 579 over Prairie Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1989.
What condition is FAS 579 over Prairie Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2023.
How much traffic does FAS 579 over Prairie Creek carry?
About 1,750 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is FAS 579 over Prairie Creek?
The structure is 76 ft (23.2 m) long with a longest span of 27 ft (8.3 m) and a deck 34 ft wide.
Who owns FAS 579 over Prairie Creek?
It is owned by the County Highway Agency.