US 4 over NH155
GoodStrafford County, New Hampshire · 1.0 MI from JCT Rt 155A · Structure no. 014501310012700
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 74 ft
- 1 main span
- Daily traffic
- 13,387
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 4 over NH155 is a steel stringer/multi-beam or girder carrying US 4 over NH155 in Strafford County, New Hampshire. It was built in 1968, so it is 57 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 13,387 vehicles a day, roughly 7% of them trucks, projected to reach 19,812 by 2043. The structure is 74 ft (22.6 m) long and 50 ft wide. If it were closed, the detour would be 11.8 mi (19 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 4 over NH155 built?
It was built in 1968, making it 57 years old in 2025.
What condition is US 4 over NH155 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 July 2024.
How much traffic does US 4 over NH155 carry?
About 13,387 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is US 4 over NH155?
The structure is 74 ft (22.6 m) long with a longest span of 67 ft (20.4 m) and a deck 50 ft wide.
Who owns US 4 over NH155?
It is owned by the State Highway Agency.