Thayer Mtn Road over S Branch Baker River
GoodGrafton County, New Hampshire · .09 MI FR No Dorchester · Structure no. 026901430005900
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected September 2023
- Type
- Other
- Steel
- Length
- 90 ft
- 1 main span
- Daily traffic
- 96
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Thayer Mtn Road over S Branch Baker River is a steel other carrying Thayer Mtn Road over S Branch Baker River in Grafton County, New Hampshire. It was built in 1999, so it is 26 years old, younger 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 96 vehicles a day, projected to reach 142 by 2043. The structure is 90 ft (27.3 m) long and 16 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thayer Mtn Road over S Branch Baker River built?
It was built in 1999, making it 26 years old in 2025.
What condition is Thayer Mtn Road over S Branch Baker 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 September 2023.
How much traffic does Thayer Mtn Road over S Branch Baker River carry?
About 96 vehicles per day (2023 count).
How long is Thayer Mtn Road over S Branch Baker River?
The structure is 90 ft (27.3 m) long with a longest span of 86 ft (26.1 m) and a deck 16 ft wide.
Who owns Thayer Mtn Road over S Branch Baker River?
It is owned by the City or Municipal Highway Agency.