I-93 SB over Eastman Brook
GoodGrafton County, New Hampshire · 2.51 MI Thornton Tl · Structure no. 028402030007900
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 42 ft
- 2 main spans
- Daily traffic
- 7,166
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-93 SB over Eastman Brook is a concrete continuous culvert carrying I-93 SB over Eastman Brook 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 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 7,166 vehicles a day, roughly 10% of them trucks, projected to reach 10,605 by 2043. The structure is 42 ft (12.8 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-93 SB over Eastman Brook built?
It was built in 1972, making it 53 years old in 2025.
What condition is I-93 SB over Eastman 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 April 2023.
How much traffic does I-93 SB over Eastman Brook carry?
About 7,166 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is I-93 SB over Eastman Brook?
The structure is 42 ft (12.8 m) long with a longest span of 18 ft (5.5 m).
Who owns I-93 SB over Eastman Brook?
It is owned by the State Highway Agency.