US Bridges

High Haith Road over Squam Lake Channel

Good

Belknap County, New Hampshire · 0.5 MI FR Squam Lake RD · Structure no. 004001260013900

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
136
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

High Haith Road over Squam Lake Channel is a concrete slab carrying High Haith Road over Squam Lake Channel in Belknap County, New Hampshire. It was built in 2010, so it is 15 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 136 vehicles a day, projected to reach 201 by 2043. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesHigh Haith Road
CrossesSquam Lake Channel
Location0.5 MI FR Squam Lake RD
CountyBelknap County
StateNew Hampshire
Coordinates43.73549, -71.49869
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating99 US tons
Inventory rating92.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136 (2023)
Projected traffic201 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible 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 High Haith Road over Squam Lake Channel built?

It was built in 2010, making it 15 years old in 2025.

What condition is High Haith Road over Squam Lake Channel 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 August 2023.

How much traffic does High Haith Road over Squam Lake Channel carry?

About 136 vehicles per day (2023 count).

How long is High Haith Road over Squam Lake Channel?

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

Who owns High Haith Road over Squam Lake Channel?

It is owned by the City or Municipal Highway Agency.