Il 108 over Macoupin Creek
GoodMacoupin County, Illinois · 1.8 M E JCT of Il 4 · Structure no. 059050900000000
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 320 ft
- 4 main spans
- Daily traffic
- 2,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 108 over Macoupin Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 108 over Macoupin Creek in Macoupin County, Illinois. It was built in 2009, so it is 16 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 2,000 vehicles a day, roughly 11% of them trucks, projected to reach 2,222 by 2046. The structure is 320 ft (97.5 m) long and 39 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 108 over Macoupin Creek built?
It was built in 2009, making it 16 years old in 2025.
What condition is Il 108 over Macoupin 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 April 2024.
How much traffic does Il 108 over Macoupin Creek carry?
About 2,000 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Il 108 over Macoupin Creek?
The structure is 320 ft (97.5 m) long with a longest span of 85 ft (25.9 m) and a deck 39 ft wide.
Who owns Il 108 over Macoupin Creek?
It is owned by the State Highway Agency.