Ill 4 over W Trib to Silver Crk
FairMadison County, Illinois · 500 N of Il 140 · Structure no. 060010500000000
- Built
- 1936
- 89 years old, rebuilt 1985
- Condition
- Fair
- inspected October 2023
- Type
- Slab
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 3,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 4 over W Trib to Silver Crk is a concrete continuous slab carrying Ill 4 over W Trib to Silver Crk in Madison County, Illinois. It was built in 1936 and reconstructed in 1985, so it is 89 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 3,800 vehicles a day, roughly 14% of them trucks, projected to reach 3,531 by 2046. The structure is 100 ft (30.6 m) long and 35 ft wide. If it were closed, the detour would be 29.2 mi (47 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 4 over W Trib to Silver Crk built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1985.
What condition is Ill 4 over W Trib to 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 Ill 4 over W Trib to Silver Crk carry?
About 3,800 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is Ill 4 over W Trib to Silver Crk?
The structure is 100 ft (30.6 m) long with a longest span of 34 ft (10.3 m) and a deck 35 ft wide.
Who owns Ill 4 over W Trib to Silver Crk?
It is owned by the State Highway Agency.