Il 4 over N Trib to Silver Crk
GoodSt. Clair County, Illinois · N Leg of Il 4/IL 161 · Structure no. 082203300000000
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected October 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 36 ft
- 3 main spans
- Daily traffic
- 7,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 4 over N Trib to Silver Crk is a concrete continuous culvert carrying Il 4 over N Trib to Silver Crk in St. Clair County, Illinois. It was built in 1995, so it is 30 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 7,800 vehicles a day, roughly 8% of them trucks, projected to reach 8,333 by 2046. The structure is 36 ft (11.1 m) long. If it were closed, the detour would be 14.9 mi (24 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 | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 4 over N Trib to Silver Crk built?
It was built in 1995, making it 30 years old in 2025.
What condition is Il 4 over N Trib to Silver Crk 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 October 2023.
How much traffic does Il 4 over N Trib to Silver Crk carry?
About 7,800 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Il 4 over N Trib to Silver Crk?
The structure is 36 ft (11.1 m) long with a longest span of 11 ft (3.4 m).
Who owns Il 4 over N Trib to Silver Crk?
It is owned by the State Highway Agency.