US Bridges

Wales Bridge Road over Soucook River

Poor

Merrimack County, New Hampshire · 1.3 MI from Concord Tl · Structure no. 015500540006500

Built
1934
91 years old
Condition
Poor
inspected November 2024
Type
Frame
Concrete
Length
146 ft
3 main spans
Daily traffic
372
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wales Bridge Road over Soucook River is a concrete frame carrying Wales Bridge Road over Soucook River in Merrimack County, New Hampshire. It was built in 1934, so it is 91 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 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 372 vehicles a day, roughly 4% of them trucks, projected to reach 550 by 2043. The structure is 146 ft (44.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWales Bridge Road
CrossesSoucook River
Location1.3 MI from Concord Tl
RouteState Highway 106
Coordinates43.26965, -71.46108
Functional classRural Local

Condition and inspection

Poor

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.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 16 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating18.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length146 ft (44.5 m)
Longest span56 ft (17.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2023)
Projected traffic550 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
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 Wales Bridge Road over Soucook River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Wales Bridge Road over Soucook River 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 Wales Bridge Road over Soucook River carry?

About 372 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Wales Bridge Road over Soucook River?

The structure is 146 ft (44.5 m) long with a longest span of 56 ft (17.1 m) and a deck 29 ft wide.

Who owns Wales Bridge Road over Soucook River?

It is owned by the City or Municipal Highway Agency.