Birchdale Road over White Brook
GoodMerrimack County, New Hampshire · 1.25 MI SE JCT Nh 13 · Structure no. 002700920013600
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- 565
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Birchdale Road over White Brook is a prestressed concrete slab carrying Birchdale Road over White Brook in Merrimack County, New Hampshire. It was built in 2018, so it is 7 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 565 vehicles a day, roughly 4% of them trucks, projected to reach 836 by 2043. The structure is 28 ft (8.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Birchdale Road over White Brook built?
It was built in 2018, making it 7 years old in 2025.
What condition is Birchdale Road over White 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 June 2024.
How much traffic does Birchdale Road over White Brook carry?
About 565 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Birchdale Road over White Brook?
The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.
Who owns Birchdale Road over White Brook?
It is owned by the City or Municipal Highway Agency.