US Bridges

Sharon Road over Town Line Brook

Good

Hillsborough County, New Hampshire · .08 MI SE Peterboro Tl · Structure no. 023500610009800

Built
1970
55 years old
Condition
Good
inspected May 2024
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
255
2023 count
Owner
State
State Highway Agency

About this bridge

Sharon Road over Town Line Brook is a concrete frame carrying Sharon Road over Town Line Brook in Hillsborough County, New Hampshire. It was built in 1970, so it is 55 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 255 vehicles a day, roughly 4% of them trucks, projected to reach 377 by 2043. The structure is 31 ft (9.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSharon Road
CrossesTown Line Brook
Location.08 MI SE Peterboro Tl
RouteState Highway 0
CountyHillsborough County
StateNew Hampshire
Coordinates42.83601, -71.96178
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.7 US tons
Inventory rating25.6 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2023)
Projected traffic377 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Sharon Road over Town Line Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is Sharon Road over Town Line 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 May 2024.

How much traffic does Sharon Road over Town Line Brook carry?

About 255 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Sharon Road over Town Line Brook?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns Sharon Road over Town Line Brook?

It is owned by the State Highway Agency.