Nh 28 NH109 over Smith River
GoodCarroll County, New Hampshire · 3.5 MI from Alton Tl · Structure no. 028301120011000
- Built
- 1935
- 90 years old, rebuilt 2006
- Condition
- Good
- inspected May 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 34 ft
- 1 main span
- Daily traffic
- 8,809
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nh 28 NH109 over Smith River is a prestressed concrete slab carrying Nh 28 NH109 over Smith River in Carroll County, New Hampshire. It was built in 1935 and reconstructed in 2006, so it is 90 years old, older than the New Hampshire average of 56.9 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 8,809 vehicles a day, roughly 7% of them trucks, projected to reach 13,037 by 2043. The structure is 34 ft (10.5 m) long and 49 ft wide. If it were closed, the detour would be 14.9 mi (24 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 Nh 28 NH109 over Smith River built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2006.
What condition is Nh 28 NH109 over Smith River 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 2024.
How much traffic does Nh 28 NH109 over Smith River carry?
About 8,809 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Nh 28 NH109 over Smith River?
The structure is 34 ft (10.5 m) long with a longest span of 31 ft (9.5 m) and a deck 49 ft wide.
Who owns Nh 28 NH109 over Smith River?
It is owned by the State Highway Agency.