Millbrook Road over Mill Brook
GoodGrafton County, New Hampshire · 2.11 Mi. Orange Tl · Structure no. 009901640011100
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected August 2023
- Type
- Frame
- Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 96
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Millbrook Road over Mill Brook is a concrete frame carrying Millbrook Road over Mill Brook in Grafton County, New Hampshire. It was built in 1991, so it is 34 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 8 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, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 40 ft (12.2 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| 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 Millbrook Road over Mill Brook built?
It was built in 1991, making it 34 years old in 2025.
What condition is Millbrook Road over Mill 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 August 2023.
How much traffic does Millbrook Road over Mill Brook carry?
About 96 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Millbrook Road over Mill Brook?
The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 27 ft wide.
Who owns Millbrook Road over Mill Brook?
It is owned by the City or Municipal Highway Agency.