US Bridges

Nh 10 over Ashuelot River

Fair

Cheshire County, New Hampshire · 4.0 MI North of Keene Tl · Structure no. 009301060013100

Built
1949
76 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
2,456
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10 over Ashuelot River is a steel stringer/multi-beam or girder carrying Nh 10 over Ashuelot River in Cheshire County, New Hampshire. It was built in 1949, 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 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 2,456 vehicles a day, roughly 4% of them trucks, projected to reach 3,634 by 2043. The structure is 62 ft (18.9 m) long and 33 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesNh 10
CrossesAshuelot River
Location4.0 MI North of Keene Tl
RouteState Highway 10
CountyCheshire County
StateNew Hampshire
Coordinates43.04828, -72.25595
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating25.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length62 ft (18.9 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,456 (2023)
Projected traffic3,634 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 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 10 over Ashuelot River built?

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

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 2,456 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 10 over Ashuelot River?

The structure is 62 ft (18.9 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns Nh 10 over Ashuelot River?

It is owned by the State Highway Agency.