Slayton Hill Road over Mascoma River
FairGrafton County, New Hampshire · .09 MI from US RTE No 4 · Structure no. 014401070010900
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 104 ft
- 1 main span
- Daily traffic
- 1,392
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Slayton Hill Road over Mascoma River is a steel stringer/multi-beam or girder carrying Slayton Hill Road over Mascoma River in Grafton County, New Hampshire. It was built in 1972, so it is 53 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,392 vehicles a day, roughly 4% of them trucks, projected to reach 2,060 by 2043. The structure is 104 ft (31.7 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Slayton Hill Road over Mascoma River built?
It was built in 1972, making it 53 years old in 2025.
What condition is Slayton Hill Road over Mascoma River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.
How much traffic does Slayton Hill Road over Mascoma River carry?
About 1,392 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Slayton Hill Road over Mascoma River?
The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.8 m) and a deck 36 ft wide.
Who owns Slayton Hill Road over Mascoma River?
It is owned by the City or Municipal Highway Agency.