Main Street over Mascoma River
GoodGrafton County, New Hampshire · .87 Mi. from Jct. Rte. 4A · Structure no. 007700810015400
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 111 ft
- 1 main span
- Daily traffic
- 1,358
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Main Street over Mascoma River is a prestressed concrete stringer/multi-beam or girder carrying Main Street over Mascoma River in Grafton County, New Hampshire. It was built in 2003, so it is 22 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 1,358 vehicles a day, roughly 3% of them trucks, projected to reach 2,009 by 2043. The structure is 111 ft (33.8 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 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 | 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 Main Street over Mascoma River built?
It was built in 2003, making it 22 years old in 2025.
What condition is Main Street over Mascoma 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 2023.
How much traffic does Main Street over Mascoma River carry?
About 1,358 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Main Street over Mascoma River?
The structure is 111 ft (33.8 m) long with a longest span of 105 ft (32 m) and a deck 43 ft wide.
Who owns Main Street over Mascoma River?
It is owned by the State Highway Agency.