I-270 EB & WB over Chain of Rocks Canal
GoodMadison County, Illinois · 2 MI E Mississippi R · Structure no. 060034500000000
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,981 ft
- 5 main spans
- Daily traffic
- 46,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-270 EB & WB over Chain of Rocks Canal is a steel continuous stringer/multi-beam or girder carrying I-270 EB & WB over Chain of Rocks Canal in Madison County, Illinois. It was built in 2014, so it is 11 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 46,200 vehicles a day, roughly 20% of them trucks, projected to reach 52,644 by 2046. The structure is 1,981 ft (603.7 m) long and 94 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-270 EB & WB over Chain of Rocks Canal built?
It was built in 2014, making it 11 years old in 2025.
What condition is I-270 EB & WB over Chain of Rocks Canal 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 June 2024.
How much traffic does I-270 EB & WB over Chain of Rocks Canal carry?
About 46,200 vehicles per day (2023 count), of which roughly 20% are trucks.
How long is I-270 EB & WB over Chain of Rocks Canal?
The structure is 1,981 ft (603.7 m) long with a longest span of 490 ft (149.4 m) and a deck 94 ft wide.
Who owns I-270 EB & WB over Chain of Rocks Canal?
It is owned by the State Highway Agency.