US Bridges

Old Keene Road over Great Brook

Good

Cheshire County, New Hampshire · 0.46 Nne of Nh RTE 12 JCT · Structure no. 026201820006400

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
33 ft
1 main span
Daily traffic
242
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Keene Road over Great Brook is a concrete culvert carrying Old Keene Road over Great Brook in Cheshire County, New Hampshire. It was built in 2008, so it is 17 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 242 vehicles a day, roughly 4% of them trucks, projected to reach 358 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld Keene Road
CrossesGreat Brook
Location0.46 Nne of Nh RTE 12 JCT
CountyCheshire County
StateNew Hampshire
Coordinates43.04817, -72.43452
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.7 US tons
Inventory rating58.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic242 (2023)
Projected traffic358 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
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 Old Keene Road over Great Brook built?

It was built in 2008, making it 17 years old in 2025.

What condition is Old Keene Road over Great 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 July 2023.

How much traffic does Old Keene Road over Great Brook carry?

About 242 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Old Keene Road over Great Brook?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m).

Who owns Old Keene Road over Great Brook?

It is owned by the City or Municipal Highway Agency.