Il 111 over Macoupin Creek
FairMacoupin County, Illinois · 7.87M S JCT Il 108 · Structure no. 059001600000000
- Built
- 1931
- 94 years old, rebuilt 1982
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 714 ft
- 1 main span
- Daily traffic
- 900
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 111 over Macoupin Creek is a steel stringer/multi-beam or girder carrying Il 111 over Macoupin Creek in Macoupin County, Illinois. It was built in 1931 and reconstructed in 1982, so it is 94 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 900 vehicles a day, roughly 21% of them trucks, projected to reach 909 by 2046. The structure is 714 ft (217.6 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Il 111 over Macoupin Creek built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1982.
What condition is Il 111 over Macoupin Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does Il 111 over Macoupin Creek carry?
About 900 vehicles per day (2023 count), of which roughly 21% are trucks.
How long is Il 111 over Macoupin Creek?
The structure is 714 ft (217.6 m) long with a longest span of 151 ft (46 m) and a deck 35 ft wide.
Who owns Il 111 over Macoupin Creek?
It is owned by the State Highway Agency.