US Bridges

Nh 10 NH123 over Ashuelot River

Fair

Cheshire County, New Hampshire · 3.0 MI from Gilsum Tl · Structure no. 016401160009100

Built
1949
76 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
2,274
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10 NH123 over Ashuelot River is a steel stringer/multi-beam or girder carrying Nh 10 NH123 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 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 2,274 vehicles a day, roughly 4% of them trucks, projected to reach 3,365 by 2043. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNh 10 NH123
CrossesAshuelot River
Location3.0 MI from Gilsum Tl
RouteState Highway 10
CountyCheshire County
StateNew Hampshire
Coordinates43.11589, -72.1957
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length80 ft (24.4 m)
Longest span71 ft (21.6 m)
Deck width33 ft (10.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,274 (2023)
Projected traffic3,365 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 NH123 over Ashuelot River built?

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

What condition is Nh 10 NH123 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 2024.

How much traffic does Nh 10 NH123 over Ashuelot River carry?

About 2,274 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 10 NH123 over Ashuelot River?

The structure is 80 ft (24.4 m) long with a longest span of 71 ft (21.6 m) and a deck 33 ft wide.

Who owns Nh 10 NH123 over Ashuelot River?

It is owned by the State Highway Agency.