Nfa E464 over Mackey Branch
GoodHamilton County, Tennessee · 1 MI East of I75 · Structure no. 330Z0080001
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected February 2024
- Type
- Culvert
- Steel
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 280
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa E464 over Mackey Branch is a steel culvert carrying Nfa E464 over Mackey Branch in Hamilton County, Tennessee. It was built in 1975, so it is 50 years old, older 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 2% of them trucks, projected to reach 448 by 2040. The structure is 33 ft (10.1 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa E464 over Mackey Branch built?
It was built in 1975, making it 50 years old in 2025.
What condition is Nfa E464 over Mackey Branch 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 February 2024.
How much traffic does Nfa E464 over Mackey Branch carry?
About 280 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa E464 over Mackey Branch?
The structure is 33 ft (10.1 m) long with a longest span of 8 ft (2.4 m) and a deck 36 ft wide.
Who owns Nfa E464 over Mackey Branch?
It is owned by the County Highway Agency.