I 840 over Tributary to S Harpeth C
GoodWilliamson County, Tennessee · Near SR-46 · Structure no. 94SR8400095
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 492 ft
- 4 main spans
- Daily traffic
- 25,335
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I 840 over Tributary to S Harpeth C is a prestressed concrete continuous stringer/multi-beam or girder carrying I 840 over Tributary to S Harpeth C 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 25,335 vehicles a day, roughly 7% of them trucks, projected to reach 34,048 by 2041. The structure is 492 ft (150 m) long and 44 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 840 over Tributary to S Harpeth C built?
It was built in 2009, making it 16 years old in 2025.
What condition is I 840 over Tributary to S Harpeth C 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 I 840 over Tributary to S Harpeth C carry?
About 25,335 vehicles per day (2021 count), of which roughly 7% are trucks.
How long is I 840 over Tributary to S Harpeth C?
The structure is 492 ft (150 m) long with a longest span of 133 ft (40.5 m) and a deck 44 ft wide.
Who owns I 840 over Tributary to S Harpeth C?
It is owned by the State Highway Agency.