Guste Island RD over Black Bayou
GoodSt. Tammany Parish, Louisiana · 2.36 Mi. S. of LA 22 · Structure no. 625200000620355
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 133 ft
- 7 main spans
- Daily traffic
- 200
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Guste Island RD over Black Bayou is a concrete slab carrying Guste Island RD over Black Bayou in St. Tammany Parish, Louisiana. It was built in 1984, so it is 41 years old, younger 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 200 vehicles a day, projected to reach 220 by 2038. The structure is 133 ft (40.5 m) long and 31 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Guste Island RD over Black Bayou built?
It was built in 1984, making it 41 years old in 2025.
What condition is Guste Island RD over Black Bayou 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 July 2024.
How much traffic does Guste Island RD over Black Bayou carry?
About 200 vehicles per day (2018 count).
How long is Guste Island RD over Black Bayou?
The structure is 133 ft (40.5 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.
Who owns Guste Island RD over Black Bayou?
It is owned by the County Highway Agency.