US Bridges

Ossipee Mt Road over Halfway Brook

Good

Carroll County, New Hampshire · 1.6 Mi. Sandwich Tl · Structure no. 017601830023100

Built
1949
76 years old, rebuilt 1996
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
256
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ossipee Mt Road over Halfway Brook is a prestressed concrete box beam or girders - multiple carrying Ossipee Mt Road over Halfway Brook in Carroll County, New Hampshire. It was built in 1949 and reconstructed in 1996, so it is 76 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 256 vehicles a day, roughly 4% of them trucks, projected to reach 378 by 2043. The structure is 39 ft (11.9 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOssipee Mt Road
CrossesHalfway Brook
Location1.6 Mi. Sandwich Tl
Coordinates43.75838, -71.36279
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.1 US tons
Inventory rating48.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span37 ft (11.3 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic256 (2023)
Projected traffic378 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Ossipee Mt Road over Halfway Brook built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1996.

What condition is Ossipee Mt Road over Halfway Brook 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 Ossipee Mt Road over Halfway Brook carry?

About 256 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Ossipee Mt Road over Halfway Brook?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.3 m) and a deck 27 ft wide.

Who owns Ossipee Mt Road over Halfway Brook?

It is owned by the City or Municipal Highway Agency.