I-255 SB over St. Clair Ave & Metrolin
GoodSt. Clair County, Illinois · 0.50 MI N State ST · Structure no. 082023800000000
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 511 ft
- 7 main spans
- Daily traffic
- 22,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-255 SB over St. Clair Ave & Metrolin is a prestressed concrete stringer/multi-beam or girder carrying I-255 SB over St. Clair Ave & Metrolin in St. Clair County, Illinois. It was built in 1982, so it is 43 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 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 22,300 vehicles a day, roughly 16% of them trucks, projected to reach 24,139 by 2046. The structure is 511 ft (155.8 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 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 I-255 SB over St. Clair Ave & Metrolin built?
It was built in 1982, making it 43 years old in 2025.
What condition is I-255 SB over St. Clair Ave & Metrolin 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 January 2025.
How much traffic does I-255 SB over St. Clair Ave & Metrolin carry?
About 22,300 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I-255 SB over St. Clair Ave & Metrolin?
The structure is 511 ft (155.8 m) long with a longest span of 90 ft (27.4 m) and a deck 59 ft wide.
Who owns I-255 SB over St. Clair Ave & Metrolin?
It is owned by the State Highway Agency.