Nfa 1001 (sa 9418) over South Harpeth River
FairWilliamson County, Tennessee · 3.0 MI SE JCT SR96&SR100 · Structure no. 94F00040003
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 150 ft
- 2 main spans
- Daily traffic
- 745
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 1001 (sa 9418) over South Harpeth River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 1001 (sa 9418) over South Harpeth River in Williamson County, Tennessee. It was built in 1968, so it is 57 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 745 vehicles a day, roughly 1% of them trucks, projected to reach 846 by 2041. The structure is 150 ft (45.7 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 1001 (sa 9418) over South Harpeth River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Nfa 1001 (sa 9418) over South 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 June 2023.
How much traffic does Nfa 1001 (sa 9418) over South Harpeth River carry?
About 745 vehicles per day (2021 count), of which roughly 1% are trucks.
How long is Nfa 1001 (sa 9418) over South Harpeth River?
The structure is 150 ft (45.7 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.
Who owns Nfa 1001 (sa 9418) over South Harpeth River?
It is owned by the County Highway Agency.