FAI 70A over Mississippi River
GoodSt. Clair County, Illinois · River Crossing Main · Structure no. 082034800000000
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected May 2024
- Type
- Stayed Girder
- Steel Continuous
- Length
- 6,462 ft
- 3 main spans
- Daily traffic
- 33,800
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
FAI 70A over Mississippi River is a steel continuous stayed girder carrying FAI 70A over Mississippi River in St. Clair 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 33,800 vehicles a day, roughly 17% of them trucks, projected to reach 44,743 by 2046. The structure is 6,462 ft (1,969.6 m) long and 86 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 | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAI 70A over Mississippi River built?
It was built in 2014, making it 11 years old in 2025.
What condition is FAI 70A over Mississippi River 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 May 2024.
How much traffic does FAI 70A over Mississippi River carry?
About 33,800 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is FAI 70A over Mississippi River?
The structure is 6,462 ft (1,969.6 m) long with a longest span of 1,500 ft (457.2 m) and a deck 86 ft wide.
Who owns FAI 70A over Mississippi River?
It is owned by the State Highway Agency.