I0310 over Ramp "a"
FairSt. Charles Parish, Louisiana · .2 MI South of LA 18 · Structure no. 024504503800207
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 1,472 ft
- 18 main spans
- Daily traffic
- 15,642
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I0310 over Ramp "a" is a prestressed concrete continuous stringer/multi-beam or girder carrying I0310 over Ramp "a" in St. Charles Parish, Louisiana. It was built in 1979, so it is 46 years old, older than the Louisiana average of 43 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 15,642 vehicles a day, roughly 25% of them trucks, projected to reach 17,206 by 2041. The structure is 1,472 ft (448.7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I0310 over Ramp "a" built?
It was built in 1979, making it 46 years old in 2025.
What condition is I0310 over Ramp "a" 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 October 2024.
How much traffic does I0310 over Ramp "a" carry?
About 15,642 vehicles per day (2021 count), of which roughly 25% are trucks.
How long is I0310 over Ramp "a"?
The structure is 1,472 ft (448.7 m) long with a longest span of 94 ft (28.7 m) and a deck 28 ft wide.
Who owns I0310 over Ramp "a"?
It is owned by the State Highway Agency.