Nfa 1917 (sa 9419) over South Harpeth Creek
GoodWilliamson County, Tennessee · 3.9 MI SE JCT SR96&SR100 · Structure no. 94019170003
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 133 ft
- 3 main spans
- Daily traffic
- 280
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 1917 (sa 9419) over South Harpeth Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa 1917 (sa 9419) over South Harpeth Creek in Williamson 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 280 vehicles a day, roughly 3% of them trucks, projected to reach 803 by 2042. The structure is 133 ft (40.5 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 1917 (sa 9419) over South Harpeth Creek built?
It was built in 1987, making it 38 years old in 2025.
What condition is Nfa 1917 (sa 9419) over South Harpeth Creek 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 June 2023.
How much traffic does Nfa 1917 (sa 9419) over South Harpeth Creek carry?
About 280 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa 1917 (sa 9419) over South Harpeth Creek?
The structure is 133 ft (40.5 m) long with a longest span of 44 ft (13.4 m) and a deck 26 ft wide.
Who owns Nfa 1917 (sa 9419) over South Harpeth Creek?
It is owned by the County Highway Agency.