Mailbox RD over Trib to Black Bayou
GoodCaddo Parish, Louisiana · 1.8 Mi. North of LA 170 · Structure no. 040932503935501
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Concrete
- Length
- 38 ft
- 2 main spans
- Daily traffic
- 38
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Mailbox RD over Trib to Black Bayou is a concrete slab carrying Mailbox RD over Trib to Black Bayou in Caddo Parish, Louisiana. It was built in 2002, so it is 23 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 38 vehicles a day, projected to reach 41 by 2039. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mailbox RD over Trib to Black Bayou built?
It was built in 2002, making it 23 years old in 2025.
What condition is Mailbox RD over Trib to 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 March 2023.
How much traffic does Mailbox RD over Trib to Black Bayou carry?
About 38 vehicles per day (2019 count).
How long is Mailbox RD over Trib to Black Bayou?
The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.
Who owns Mailbox RD over Trib to Black Bayou?
It is owned by the County Highway Agency.