US Bridges

Gould Hill Road over Bog Pond Outlet

Fair

Merrimack County, New Hampshire · 1.5 MI FR Mascoma RD · Structure no. 005801560012600

Built
1950
75 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gould Hill Road over Bog Pond Outlet is a concrete slab carrying Gould Hill Road over Bog Pond Outlet in Merrimack County, New Hampshire. It was built in 1950, so it is 75 years old, older than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 23 ft (7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGould Hill Road
CrossesBog Pond Outlet
Location1.5 MI FR Mascoma RD
CountyMerrimack County
StateNew Hampshire
Coordinates43.51724, -71.84125
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating31.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-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 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 Gould Hill Road over Bog Pond Outlet built?

It was built in 1950, making it 75 years old in 2025.

What condition is Gould Hill Road over Bog Pond Outlet in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Gould Hill Road over Bog Pond Outlet carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Gould Hill Road over Bog Pond Outlet?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Gould Hill Road over Bog Pond Outlet?

It is owned by the City or Municipal Highway Agency.