US Bridges

Nh 32 over Martin Brook

Good

Cheshire County, New Hampshire · 2.38MI N Richmond Tl · Structure no. 025101430008700

Built
1929
96 years old, rebuilt 2013
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
2,956
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 32 over Martin Brook is a steel stringer/multi-beam or girder carrying Nh 32 over Martin Brook in Cheshire County, New Hampshire. It was built in 1929 and reconstructed in 2013, so it is 96 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 2,956 vehicles a day, roughly 4% of them trucks, projected to reach 4,374 by 2043. The structure is 31 ft (9.6 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNh 32
CrossesMartin Brook
Location2.38MI N Richmond Tl
RouteState Highway 32
CountyCheshire County
StateNew Hampshire
Coordinates42.846, -72.27894
Functional classRural Major 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,956 (2023)
Projected traffic4,374 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 32 over Martin Brook built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2013.

What condition is Nh 32 over Martin Brook 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 June 2024.

How much traffic does Nh 32 over Martin Brook carry?

About 2,956 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 32 over Martin Brook?

The structure is 31 ft (9.6 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns Nh 32 over Martin Brook?

It is owned by the State Highway Agency.