US Bridges

Nh 25 NH113 over Cold Brook

Fair

Carroll County, New Hampshire · 1.9 MI from Sandwich T.L. · Structure no. 025201540006700

Built
1938
87 years old, rebuilt 1981
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
5,048
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 25 NH113 over Cold Brook is a concrete slab carrying Nh 25 NH113 over Cold Brook in Carroll County, New Hampshire. It was built in 1938 and reconstructed in 1981, so it is 87 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 5 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 5,048 vehicles a day, roughly 7% of them trucks, projected to reach 7,471 by 2043. The structure is 26 ft (7.9 m) long and 45 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

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CarriesNh 25 NH113
CrossesCold Brook
Location1.9 MI from Sandwich T.L.
RouteState Highway 25
CountyCarroll County
StateNew Hampshire
Coordinates43.82507, -71.30311
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.5 US tons
Inventory rating39.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width45 ft (13.7 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,048 (2023)
Projected traffic7,471 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

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 Nh 25 NH113 over Cold Brook built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1981.

What condition is Nh 25 NH113 over Cold 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 NH113 over Cold Brook carry?

About 5,048 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 25 NH113 over Cold Brook?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 45 ft wide.

Who owns Nh 25 NH113 over Cold Brook?

It is owned by the State Highway Agency.