US Bridges

North Pembroke RD over Soucook River

Good

Merrimack County, New Hampshire · At Pembroke Tl · Structure no. 005201830015600

Built
1959
66 years old, rebuilt 2022
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
121 ft
1 main span
Daily traffic
4,050
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Pembroke RD over Soucook River is a concrete box beam or girders - multiple carrying North Pembroke RD over Soucook River in Merrimack County, New Hampshire. It was built in 1959 and reconstructed in 2022, so it is 66 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,050 vehicles a day, roughly 4% of them trucks, projected to reach 5,994 by 2043. The structure is 121 ft (36.9 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNorth Pembroke RD
CrossesSoucook River
LocationAt Pembroke Tl
Coordinates43.21337, -71.48027
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating95.3 US tons
Inventory rating95.3 US tons

Structure

MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length121 ft (36.9 m)
Longest span116 ft (35.4 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,050 (2023)
Projected traffic5,994 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
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 North Pembroke RD over Soucook River built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2022.

What condition is North Pembroke RD over Soucook 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 July 2023.

How much traffic does North Pembroke RD over Soucook River carry?

About 4,050 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is North Pembroke RD over Soucook River?

The structure is 121 ft (36.9 m) long with a longest span of 116 ft (35.4 m) and a deck 33 ft wide.

Who owns North Pembroke RD over Soucook River?

It is owned by the City or Municipal Highway Agency.