Nfa 978 (sa 9406) over Boone Creek
GoodWilliamson County, Tennessee · 4.6 MI SE JCT SR106&SR247 · Structure no. 94F00340007
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 821
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 978 (sa 9406) over Boone Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa 978 (sa 9406) over Boone Creek in Williamson County, Tennessee. It was built in 2017, so it is 8 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 821 vehicles a day, roughly 3% of them trucks, projected to reach 752 by 2039. The structure is 50 ft (15.3 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 978 (sa 9406) over Boone Creek built?
It was built in 2017, making it 8 years old in 2025.
What condition is Nfa 978 (sa 9406) over Boone 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 May 2023.
How much traffic does Nfa 978 (sa 9406) over Boone Creek carry?
About 821 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa 978 (sa 9406) over Boone Creek?
The structure is 50 ft (15.3 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.
Who owns Nfa 978 (sa 9406) over Boone Creek?
It is owned by the County Highway Agency.