Ill 15 over Ill 157
GoodSt. Clair County, Illinois · 1.8 M E JCT Ill 163 · Structure no. 082004000000000
- Built
- 1940
- 85 years old, rebuilt 1985
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 163 ft
- 3 main spans
- Daily traffic
- 28,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 15 over Ill 157 is a steel continuous stringer/multi-beam or girder carrying Ill 15 over Ill 157 in St. Clair County, Illinois. It was built in 1940 and reconstructed in 1985, so it is 85 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 28,800 vehicles a day, roughly 8% of them trucks, projected to reach 28,280 by 2046. The structure is 163 ft (49.7 m) long and 71 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 15 over Ill 157 built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1985.
What condition is Ill 15 over Ill 157 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 over Ill 157 carry?
About 28,800 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Ill 15 over Ill 157?
The structure is 163 ft (49.7 m) long with a longest span of 62 ft (18.9 m) and a deck 71 ft wide.
Who owns Ill 15 over Ill 157?
It is owned by the State Highway Agency.