Ill 15 WB over Ill 158
GoodSt. Clair County, Illinois · S Belleville · Structure no. 082004300000000
- Built
- 1958
- 67 years old, rebuilt 1988
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 193 ft
- 3 main spans
- Daily traffic
- 21,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 15 WB over Ill 158 is a steel continuous stringer/multi-beam or girder carrying Ill 15 WB over Ill 158 in St. Clair County, Illinois. It was built in 1958 and reconstructed in 1988, so it is 67 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 21,500 vehicles a day, roughly 10% of them trucks, projected to reach 10,151 by 2046. The structure is 193 ft (58.8 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 15 WB over Ill 158 built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1988.
What condition is Ill 15 WB over Ill 158 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 March 2024.
How much traffic does Ill 15 WB over Ill 158 carry?
About 21,500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Ill 15 WB over Ill 158?
The structure is 193 ft (58.8 m) long with a longest span of 74 ft (22.6 m) and a deck 43 ft wide.
Who owns Ill 15 WB over Ill 158?
It is owned by the State Highway Agency.