US Bridges

Pettyboro Road over Pettyboro Brook

Good

Grafton County, New Hampshire · 0.8 MI from Bath Tl · Structure no. 015600940004800

Built
1985
40 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
212
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pettyboro Road over Pettyboro Brook is a concrete culvert carrying Pettyboro Road over Pettyboro Brook in Grafton County, New Hampshire. It was built in 1985, so it is 40 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 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 212 vehicles a day, roughly 4% of them trucks, projected to reach 313 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesPettyboro Road
CrossesPettyboro Brook
Location0.8 MI from Bath Tl
CountyGrafton County
StateNew Hampshire
Coordinates44.22922, -71.96291
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic212 (2023)
Projected traffic313 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Pettyboro Road over Pettyboro Brook built?

It was built in 1985, making it 40 years old in 2025.

What condition is Pettyboro Road over Pettyboro 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 August 2023.

How much traffic does Pettyboro Road over Pettyboro Brook carry?

About 212 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Pettyboro Road over Pettyboro Brook?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m).

Who owns Pettyboro Road over Pettyboro Brook?

It is owned by the City or Municipal Highway Agency.