US Bridges

Fee Tpk N&s Ramps over Salmon Brook

Good

Hillsborough County, New Hampshire · 3.3 MI N Mass Sl · Structure no. 017701220007300

Built
1955
70 years old, rebuilt 1996
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
128,889
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Fee Tpk N&s Ramps over Salmon Brook is a concrete culvert carrying Fee Tpk N&s Ramps over Salmon Brook in Hillsborough County, New Hampshire. It was built in 1955 and reconstructed in 1996, so it is 70 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 128,889 vehicles a day, roughly 8% of them trucks, projected to reach 190,755 by 2043. The structure is 20 ft (6.1 m) long.

CarriesFee Tpk N&s Ramps
CrossesSalmon Brook
Location3.3 MI N Mass Sl
RouteU.S. Route 3
Coordinates42.73324, -71.47206
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating74.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128,889 (2023)
Projected traffic190,755 by 2043
Trucks8%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fee Tpk N&s Ramps over Salmon Brook built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1996.

What condition is Fee Tpk N&s Ramps over Salmon 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 2024.

How much traffic does Fee Tpk N&s Ramps over Salmon Brook carry?

About 128,889 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Fee Tpk N&s Ramps over Salmon Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns Fee Tpk N&s Ramps over Salmon Brook?

It is owned by the State Toll Authority.