Steam Mill Hollow over Natchez Trace Parkway
GoodMaury County, Tennessee · 6.05 Miles from Tn Route · Structure no. 5570425P0000000
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 178 ft
- 3 main spans
- Daily traffic
- 215
- 2019 count
- Owner
- Federal
- National Park Service
About this bridge
Steam Mill Hollow over Natchez Trace Parkway is a prestressed concrete continuous box beam or girders - single or spread carrying Steam Mill Hollow over Natchez Trace Parkway in Maury County, Tennessee. It was built in 1987, so it is 38 years old, younger than the Tennessee average of 47.4 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 215 vehicles a day, roughly 2% of them trucks, projected to reach 235 by 2039. The structure is 178 ft (54.2 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Steam Mill Hollow over Natchez Trace Parkway built?
It was built in 1987, making it 38 years old in 2025.
What condition is Steam Mill Hollow over Natchez Trace Parkway 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 Steam Mill Hollow over Natchez Trace Parkway carry?
About 215 vehicles per day (2019 count), of which roughly 2% are trucks.
How long is Steam Mill Hollow over Natchez Trace Parkway?
The structure is 178 ft (54.2 m) long with a longest span of 157 ft (48 m) and a deck 31 ft wide.
Who owns Steam Mill Hollow over Natchez Trace Parkway?
It is owned by the National Park Service.