Dummyline RD over Black River
GoodSt. Tammany Parish, Louisiana · 1.54 M W of LA 1077 · Structure no. 625230259901071
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Steel
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 1,563
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Dummyline RD over Black River is a steel culvert carrying Dummyline RD over Black River in St. Tammany Parish, Louisiana. It was built in 1990, so it is 35 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 1,563 vehicles a day, projected to reach 1,719 by 2037. The structure is 24 ft (7.3 m) long and 55 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Dummyline RD over Black River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Dummyline RD over Black River 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 November 2024.
How much traffic does Dummyline RD over Black River carry?
About 1,563 vehicles per day (2017 count).
How long is Dummyline RD over Black River?
The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 55 ft wide.
Who owns Dummyline RD over Black River?
It is owned by the County Highway Agency.