US Bridges

NH132 over Squam River

Fair

Grafton County, New Hampshire · 0.9 MI N New Hampton Tl · Structure no. 001100990005800

Built
1905
120 years old, rebuilt 1995
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
3,488
2023 count
Owner
State
State Highway Agency

About this bridge

NH132 over Squam River is a prestressed concrete box beam or girders - multiple carrying NH132 over Squam River in Grafton County, New Hampshire. It was built in 1905 and reconstructed in 1995, so it is 120 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,488 vehicles a day, roughly 4% of them trucks, projected to reach 5,162 by 2043. The structure is 28 ft (8.5 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNH132
CrossesSquam River
Location0.9 MI N New Hampton Tl
RouteState Highway 3B
Coordinates43.69459, -71.62979
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating65 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,488 (2023)
Projected traffic5,162 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 NH132 over Squam River built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1995.

What condition is NH132 over Squam River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does NH132 over Squam River carry?

About 3,488 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH132 over Squam River?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 42 ft wide.

Who owns NH132 over Squam River?

It is owned by the State Highway Agency.