Il 4 over N1 Trib L Silver Crk
FairSt. Clair County, Illinois · 2 MI N of US 50 · Structure no. 082244500000000
- Built
- 1930
- 95 years old
- Condition
- Fair
- inspected October 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 6,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 4 over N1 Trib L Silver Crk is a concrete continuous culvert carrying Il 4 over N1 Trib L Silver Crk in St. Clair County, Illinois. It was built in 1930, so it is 95 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 6,800 vehicles a day, roughly 17% of them trucks, projected to reach 5,858 by 2046. The structure is 24 ft (7.4 m) long. If it were closed, the detour would be 14.3 mi (23 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 4 over N1 Trib L Silver Crk built?
It was built in 1930, making it 95 years old in 2025.
What condition is Il 4 over N1 Trib L Silver Crk 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 October 2023.
How much traffic does Il 4 over N1 Trib L Silver Crk carry?
About 6,800 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is Il 4 over N1 Trib L Silver Crk?
The structure is 24 ft (7.4 m) long with a longest span of 10 ft (3.2 m).
Who owns Il 4 over N1 Trib L Silver Crk?
It is owned by the State Highway Agency.