Natchez Trace Park over Twenty Mile Slough
GoodItawamba County, Mississippi · 2.8 Miles South of Ms Rou · Structure no. 5570226P0000000
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected February 2025
- Type
- Slab
- Concrete Continuous
- Length
- 207 ft
- 5 main spans
- Daily traffic
- 1,200
- 2024 count
- Owner
- Federal
- National Park Service
About this bridge
Natchez Trace Park over Twenty Mile Slough is a concrete continuous slab carrying Natchez Trace Park over Twenty Mile Slough in Itawamba County, Mississippi. It was built in 1977, so it is 48 years old, older than the Mississippi average of 38.9 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 1,200 vehicles a day, roughly 2% of them trucks, projected to reach 1,320 by 2044. The structure is 207 ft (63.1 m) long and 39 ft wide. If it were closed, the detour would be 34.8 mi (56 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 Natchez Trace Park over Twenty Mile Slough built?
It was built in 1977, making it 48 years old in 2025.
What condition is Natchez Trace Park over Twenty Mile Slough 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 February 2025.
How much traffic does Natchez Trace Park over Twenty Mile Slough carry?
About 1,200 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is Natchez Trace Park over Twenty Mile Slough?
The structure is 207 ft (63.1 m) long with a longest span of 44 ft (13.4 m) and a deck 39 ft wide.
Who owns Natchez Trace Park over Twenty Mile Slough?
It is owned by the National Park Service.