Nfa A427 over Little Harpeth River
FairWilliamson County, Tennessee · 3.9 MI NW JCT SR6&SR253 · Structure no. 940A4270001
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 109 ft
- 3 main spans
- Daily traffic
- 920
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Nfa A427 over Little Harpeth River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A427 over Little Harpeth River in Williamson County, Tennessee. It was built in 1970, so it is 55 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 920 vehicles a day, roughly 2% of them trucks, projected to reach 1,472 by 2042. The structure is 109 ft (33.2 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 A427 over Little Harpeth River built?
It was built in 1970, making it 55 years old in 2025.
What condition is Nfa A427 over Little Harpeth River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.
How much traffic does Nfa A427 over Little Harpeth River carry?
About 920 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A427 over Little Harpeth River?
The structure is 109 ft (33.2 m) long with a longest span of 35 ft (10.7 m) and a deck 28 ft wide.
Who owns Nfa A427 over Little Harpeth River?
It is owned by the City or Municipal Highway Agency.