US Bridges

Nh 25 over Stony Brook

Fair

Carroll County, New Hampshire · 5.4 MI from Ossipee Tl · Structure no. 025201660013400

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
3,793
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 25 over Stony Brook is a concrete culvert carrying Nh 25 over Stony Brook in Carroll County, New Hampshire. It was built in 1986, so it is 39 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 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 3,793 vehicles a day, roughly 7% of them trucks, projected to reach 5,613 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNh 25
CrossesStony Brook
Location5.4 MI from Ossipee Tl
RouteState Highway 250
CountyCarroll County
StateNew Hampshire
Coordinates43.82487, -71.23522
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,793 (2023)
Projected traffic5,613 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nh 25 over Stony Brook built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nh 25 over Stony Brook 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 Nh 25 over Stony Brook carry?

About 3,793 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 25 over Stony Brook?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Nh 25 over Stony Brook?

It is owned by the State Highway Agency.