Salmon Street EB over Merrimack R CSX RD Ramp
PoorHillsborough County, New Hampshire · 0.3MI W of JCT Rt 3 · Structure no. 016101070007200
- Built
- 1970
- 55 years old, rebuilt 1999
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,023 ft
- 4 main spans
- Daily traffic
- 13,150
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Salmon Street EB over Merrimack R CSX RD Ramp is a steel continuous stringer/multi-beam or girder carrying Salmon Street EB over Merrimack R CSX RD Ramp in Hillsborough County, New Hampshire. It was built in 1970 and reconstructed in 1999, so it is 55 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 13,150 vehicles a day, roughly 5% of them trucks, projected to reach 19,462 by 2043. The structure is 1,023 ft (311.8 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Salmon Street EB over Merrimack R CSX RD Ramp built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1999.
What condition is Salmon Street EB over Merrimack R CSX RD Ramp in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
How much traffic does Salmon Street EB over Merrimack R CSX RD Ramp carry?
About 13,150 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Salmon Street EB over Merrimack R CSX RD Ramp?
The structure is 1,023 ft (311.8 m) long with a longest span of 169 ft (51.5 m) and a deck 34 ft wide.
Who owns Salmon Street EB over Merrimack R CSX RD Ramp?
It is owned by the City or Municipal Highway Agency.