US Bridges

Tricnit Road over Furnace Brook

Good

Hillsborough County, New Hampshire · 0.1 MI FR Nh RTE 124 · Structure no. 018601390010600

Built
2009
16 years old
Condition
Good
inspected August 2024
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
327
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Tricnit Road over Furnace Brook is a concrete frame carrying Tricnit Road over Furnace Brook in Hillsborough County, New Hampshire. It was built in 2009, so it is 16 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 327 vehicles a day, roughly 4% of them trucks, projected to reach 483 by 2043. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesTricnit Road
CrossesFurnace Brook
Location0.1 MI FR Nh RTE 124
Coordinates42.75889, -71.84602
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.7 US tons
Inventory rating40 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic327 (2023)
Projected traffic483 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 Tricnit Road over Furnace Brook built?

It was built in 2009, making it 16 years old in 2025.

What condition is Tricnit Road over Furnace 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 2024.

How much traffic does Tricnit Road over Furnace Brook carry?

About 327 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Tricnit Road over Furnace Brook?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns Tricnit Road over Furnace Brook?

It is owned by the City or Municipal Highway Agency.