Il 138 over Cahokia Creek
GoodMacoupin County, Illinois · 0.1 MI W Wilsonville · Structure no. 059050100000000
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 84 ft
- 1 main span
- Daily traffic
- 1,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 138 over Cahokia Creek is a prestressed concrete stringer/multi-beam or girder carrying Il 138 over Cahokia Creek in Macoupin County, Illinois. It was built in 2002, so it is 23 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,000 vehicles a day, roughly 7% of them trucks, projected to reach 1,111 by 2046. The structure is 84 ft (25.5 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 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 138 over Cahokia Creek built?
It was built in 2002, making it 23 years old in 2025.
What condition is Il 138 over Cahokia 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 November 2024.
How much traffic does Il 138 over Cahokia Creek carry?
About 1,000 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Il 138 over Cahokia Creek?
The structure is 84 ft (25.5 m) long with a longest span of 81 ft (24.7 m) and a deck 35 ft wide.
Who owns Il 138 over Cahokia Creek?
It is owned by the State Highway Agency.