I-93 SB over Pemigewasset River
GoodGrafton County, New Hampshire · Holderness-Plymouth Tl · Structure no. 021601460014000
- Built
- 1964
- 61 years old, rebuilt 1994
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 425 ft
- 3 main spans
- Daily traffic
- 11,571
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-93 SB over Pemigewasset River is a steel continuous stringer/multi-beam or girder carrying I-93 SB over Pemigewasset River in Grafton County, New Hampshire. It was built in 1964 and reconstructed in 1994, so it is 61 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.
It carries about 11,571 vehicles a day, roughly 9% of them trucks, projected to reach 17,125 by 2043. The structure is 425 ft (129.5 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-93 SB over Pemigewasset River built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1994.
What condition is I-93 SB over Pemigewasset 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 August 2023.
How much traffic does I-93 SB over Pemigewasset River carry?
About 11,571 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is I-93 SB over Pemigewasset River?
The structure is 425 ft (129.5 m) long with a longest span of 160 ft (48.8 m) and a deck 56 ft wide.
Who owns I-93 SB over Pemigewasset River?
It is owned by the State Highway Agency.