US Bridges

Nh 10 over Ashuelot River

Fair

Cheshire County, New Hampshire · 3.2 MI North of Keene Tl · Structure no. 009300920012100

Built
1935
90 years old, rebuilt 2000
Condition
Fair
inspected May 2023
Type
Frame
Steel
Length
99 ft
1 main span
Daily traffic
3,308
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10 over Ashuelot River is a steel frame carrying Nh 10 over Ashuelot River in Cheshire County, New Hampshire. It was built in 1935 and reconstructed in 2000, 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 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 3,308 vehicles a day, roughly 4% of them trucks, projected to reach 4,895 by 2043. The structure is 99 ft (30.2 m) long and 32 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesNh 10
CrossesAshuelot River
Location3.2 MI North of Keene Tl
RouteState Highway 10
CountyCheshire County
StateNew Hampshire
Coordinates43.04267, -72.26724
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.8 US tons
Inventory rating57.2 US tons

Structure

Structure typeFrame
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length99 ft (30.2 m)
Longest span83 ft (25.3 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,308 (2023)
Projected traffic4,895 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible 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 10 over Ashuelot River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2000.

What condition is Nh 10 over Ashuelot River 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 10 over Ashuelot River carry?

About 3,308 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 10 over Ashuelot River?

The structure is 99 ft (30.2 m) long with a longest span of 83 ft (25.3 m) and a deck 32 ft wide.

Who owns Nh 10 over Ashuelot River?

It is owned by the State Highway Agency.