US Bridges

Old Greenfield RD over Boglie Brook

Good

Hillsborough County, New Hampshire · 2.05 MI FR Greenfield Tl · Structure no. 020801260012600

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Frame
Concrete
Length
23 ft
1 main span
Daily traffic
318
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Greenfield RD over Boglie Brook is a concrete frame carrying Old Greenfield RD over Boglie Brook in Hillsborough 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 318 vehicles a day, roughly 4% of them trucks, projected to reach 470 by 2043. The structure is 23 ft (7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOld Greenfield RD
CrossesBoglie Brook
Location2.05 MI FR Greenfield Tl
Coordinates42.90767, -71.92254
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
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
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 rating86 US tons
Inventory rating51.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic318 (2023)
Projected traffic470 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

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 Greenfield RD over Boglie Brook built?

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

What condition is Old Greenfield RD over Boglie 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 Greenfield RD over Boglie Brook carry?

About 318 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Old Greenfield RD over Boglie Brook?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns Old Greenfield RD over Boglie Brook?

It is owned by the City or Municipal Highway Agency.