US Bridges

Canal Road over Great East Lake Outlet

Good

Carroll County, New Hampshire · Town RD Maine Sl · Structure no. 026101860011800

Built
1920
105 years old, rebuilt 2021
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
665
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Canal Road over Great East Lake Outlet is a concrete slab carrying Canal Road over Great East Lake Outlet in Carroll County, New Hampshire. It was built in 1920 and reconstructed in 2021, so it is 105 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 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 665 vehicles a day, roughly 4% of them trucks, projected to reach 984 by 2043. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesCanal Road
CrossesGreat East Lake Outlet
LocationTown RD Maine Sl
Coordinates43.56926, -70.97117
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 rating57.7 US tons
Inventory rating44.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span33 ft (10.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic665 (2023)
Projected traffic984 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Canal Road over Great East Lake Outlet built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2021.

What condition is Canal Road over Great East Lake Outlet 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 September 2024.

How much traffic does Canal Road over Great East Lake Outlet carry?

About 665 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Canal Road over Great East Lake Outlet?

The structure is 40 ft (12.2 m) long with a longest span of 33 ft (10.2 m) and a deck 24 ft wide.

Who owns Canal Road over Great East Lake Outlet?

It is owned by the City or Municipal Highway Agency.