US Bridges

Coombs Bridge RD over Ashuelot River

FairPosted for load

Cheshire County, New Hampshire · 0.27MI. NH119 · Structure no. 027901430017500

Built
1837
188 years old, rebuilt 1997
Condition
Fair
inspected August 2024
Type
Truss - Thru
Wood or Timber
Length
120 ft
1 main span
Daily traffic
618
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Coombs Bridge RD over Ashuelot River is a wood or timber truss - thru carrying Coombs Bridge RD over Ashuelot River in Cheshire County, New Hampshire. It was built in 1837 and reconstructed in 1997, so it is 188 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. Its operating status is: posted for load restriction.

It carries about 618 vehicles a day, roughly 4% of them trucks, projected to reach 914 by 2043. The structure is 120 ft (36.6 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCoombs Bridge RD
CrossesAshuelot River
Location0.27MI. NH119
Coordinates42.83795, -72.36088
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating13.7 US tons
Inventory rating10.8 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span112 ft (34.1 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deck8 ft (2.6 m)

Traffic and service

Average daily traffic618 (2023)
Projected traffic914 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Coombs Bridge RD over Ashuelot River built?

It was built in 1837, making it 188 years old in 2025. It was reconstructed in 1997.

What condition is Coombs Bridge RD 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 August 2024.

How much traffic does Coombs Bridge RD over Ashuelot River carry?

About 618 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Coombs Bridge RD over Ashuelot River?

The structure is 120 ft (36.6 m) long with a longest span of 112 ft (34.1 m) and a deck 16 ft wide.

Who owns Coombs Bridge RD over Ashuelot River?

It is owned by the City or Municipal Highway Agency.