I 20 over Little Cahaba River
FairSt. Clair County, Alabama · .1 Mi.W.Us 411 · Structure no. 007214
- Built
- 1961
- 64 years old, rebuilt 2003
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 38 ft
- 3 main spans
- Daily traffic
- 65,150
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I 20 over Little Cahaba River is a concrete culvert carrying I 20 over Little Cahaba River in St. Clair County, Alabama. It was built in 1961 and reconstructed in 2003, so it is 64 years old, older than the Alabama average of 51.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 65,150 vehicles a day, roughly 24% of them trucks, projected to reach 78,712 by 2044. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 20 over Little Cahaba River built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2003.
What condition is I 20 over Little Cahaba River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does I 20 over Little Cahaba River carry?
About 65,150 vehicles per day (2024 count), of which roughly 24% are trucks.
How long is I 20 over Little Cahaba River?
The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).
Who owns I 20 over Little Cahaba River?
It is owned by the State Highway Agency.