US Bridges

NH113A over Cold River

Good

Carroll County, New Hampshire · 0.9 MI Wing Road Road · Structure no. 023301950013900

Built
1935
90 years old, rebuilt 1994
Condition
Good
inspected July 2024
Type
Tee Beam
Concrete
Length
61 ft
1 main span
Daily traffic
487
2023 count
Owner
State
State Highway Agency

About this bridge

NH113A over Cold River is a concrete tee beam carrying NH113A over Cold River in Carroll County, New Hampshire. It was built in 1935 and reconstructed in 1994, so it is 90 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 487 vehicles a day, roughly 10% of them trucks, projected to reach 720 by 2043. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesNH113A
CrossesCold River
Location0.9 MI Wing Road Road
RouteState Highway 113A
Coordinates43.86667, -71.39768
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating16.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic487 (2023)
Projected traffic720 by 2043
Trucks10%
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

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 NH113A over Cold River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1994.

What condition is NH113A over Cold River 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 July 2024.

How much traffic does NH113A over Cold River carry?

About 487 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH113A over Cold River?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 28 ft wide.

Who owns NH113A over Cold River?

It is owned by the State Highway Agency.