Nfa D161 over Deer Ridge RD / I840
GoodWilliamson County, Tennessee · So. of SR100 · Structure no. 94SR8400011
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 274 ft
- 2 main spans
- Daily traffic
- 100
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Nfa D161 over Deer Ridge RD / I840 is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa D161 over Deer Ridge RD / I840 in Williamson County, Tennessee. It was built in 2009, so it is 16 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 160 by 2041. The structure is 274 ft (83.5 m) long and 32 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa D161 over Deer Ridge RD / I840 built?
It was built in 2009, making it 16 years old in 2025.
What condition is Nfa D161 over Deer Ridge RD / I840 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 November 2024.
How much traffic does Nfa D161 over Deer Ridge RD / I840 carry?
About 100 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa D161 over Deer Ridge RD / I840?
The structure is 274 ft (83.5 m) long with a longest span of 150 ft (45.6 m) and a deck 32 ft wide.
Who owns Nfa D161 over Deer Ridge RD / I840?
It is owned by the State Highway Agency.