Nfa A066 over Harpeth River
GoodWilliamson County, Tennessee · 1.0 MI NW JCT SR46&SR106 · Structure no. 940A0660001
- Built
- 1985
- 40 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 223 ft
- 3 main spans
- Daily traffic
- 490
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A066 over Harpeth River is a prestressed concrete stringer/multi-beam or girder carrying Nfa A066 over Harpeth River in Williamson County, Tennessee. It was built in 1985, so it is 40 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 490 vehicles a day, roughly 2% of them trucks, projected to reach 784 by 2041. The structure is 223 ft (68 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| 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 Nfa A066 over Harpeth River built?
It was built in 1985, making it 40 years old in 2025.
What condition is Nfa A066 over Harpeth 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 July 2023.
How much traffic does Nfa A066 over Harpeth River carry?
About 490 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A066 over Harpeth River?
The structure is 223 ft (68 m) long with a longest span of 75 ft (22.9 m) and a deck 26 ft wide.
Who owns Nfa A066 over Harpeth River?
It is owned by the County Highway Agency.