Ill 177 over Trib Rayhills Slough
GoodSt. Clair County, Illinois · 4.5M E of Il 4 · Structure no. 082240400000000
- Built
- 1994
- 31 years old
- Condition
- Good
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 2,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 177 over Trib Rayhills Slough is a concrete culvert carrying Ill 177 over Trib Rayhills Slough in St. Clair County, Illinois. It was built in 1994, so it is 31 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 2,000 vehicles a day, roughly 12% of them trucks, projected to reach 1,768 by 2046. The structure is 26 ft (7.9 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 177 over Trib Rayhills Slough built?
It was built in 1994, making it 31 years old in 2025.
What condition is Ill 177 over Trib Rayhills Slough 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 July 2024.
How much traffic does Ill 177 over Trib Rayhills Slough carry?
About 2,000 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is Ill 177 over Trib Rayhills Slough?
The structure is 26 ft (7.9 m) long with a longest span of 11 ft (3.4 m).
Who owns Ill 177 over Trib Rayhills Slough?
It is owned by the State Highway Agency.