I0055 over Swamp
GoodSt. John the Baptist Parish, Louisiana · 0.1 M W of US 51 · Structure no. 624804520108258
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 660 ft
- 8 main spans
- Daily traffic
- 28,021
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I0055 over Swamp is a prestressed concrete stringer/multi-beam or girder carrying I0055 over Swamp in St. John the Baptist Parish, Louisiana. It was built in 1975, so it is 50 years old, older than the Louisiana average of 43 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 28,021 vehicles a day, roughly 25% of them trucks, projected to reach 30,823 by 2041. The structure is 660 ft (201.2 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I0055 over Swamp built?
It was built in 1975, making it 50 years old in 2025.
What condition is I0055 over Swamp 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 2023.
How much traffic does I0055 over Swamp carry?
About 28,021 vehicles per day (2021 count), of which roughly 25% are trucks.
How long is I0055 over Swamp?
The structure is 660 ft (201.2 m) long with a longest span of 70 ft (21.3 m) and a deck 29 ft wide.
Who owns I0055 over Swamp?
It is owned by the State Highway Agency.