US Bridges

Nh 12 over Nhrr(abd)

Good

Cheshire County, New Hampshire · .8MI Westmoreland Tl · Structure no. 026202080006000

Built
1960
65 years old
Condition
Good
inspected June 2024
Type
Frame
Concrete
Length
48 ft
1 main span
Daily traffic
8,251
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 12 over Nhrr(abd) is a concrete frame carrying Nh 12 over Nhrr(abd) in Cheshire County, New Hampshire. It was built in 1960, so it is 65 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 8,251 vehicles a day, roughly 7% of them trucks, projected to reach 12,211 by 2043. The structure is 48 ft (14.6 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNh 12
CrossesNhrr(abd)
Location.8MI Westmoreland Tl
RouteState Highway 12
Coordinates43.031, -72.43921
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating27 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span44 ft (13.4 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,251 (2023)
Projected traffic12,211 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nh 12 over Nhrr(abd) built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nh 12 over Nhrr(abd) 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 12 over Nhrr(abd) carry?

About 8,251 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 12 over Nhrr(abd)?

The structure is 48 ft (14.6 m) long with a longest span of 44 ft (13.4 m) and a deck 44 ft wide.

Who owns Nh 12 over Nhrr(abd)?

It is owned by the State Highway Agency.