Thornton Gore RD over Johnson Brook
GoodPosted for loadGrafton County, New Hampshire · 0.9 MI from Woodstock Tl · Structure no. 025401110012100
- Built
- 1948
- 77 years old
- Condition
- Good
- inspected October 2023
- Type
- Frame
- Concrete
- Length
- 29 ft
- 1 main span
- Daily traffic
- 222
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Thornton Gore RD over Johnson Brook is a concrete frame carrying Thornton Gore RD over Johnson Brook in Grafton County, New Hampshire. It was built in 1948, so it is 77 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. Its operating status is: posted for load restriction.
It carries about 222 vehicles a day, roughly 4% of them trucks, projected to reach 328 by 2043. The structure is 29 ft (8.8 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thornton Gore RD over Johnson Brook built?
It was built in 1948, making it 77 years old in 2025.
What condition is Thornton Gore RD over Johnson Brook 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 October 2023.
How much traffic does Thornton Gore RD over Johnson Brook carry?
About 222 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Thornton Gore RD over Johnson Brook?
The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.
Who owns Thornton Gore RD over Johnson Brook?
It is owned by the City or Municipal Highway Agency.