US Bridges

Halfmoon Pond RD over Halfmoon Pond Outlet

Good

Sullivan County, New Hampshire · 0.55 MI Nh 31 · Structure no. 026501310008300

Built
2009
16 years old
Condition
Good
inspected September 2024
Type
Slab
Wood or Timber
Length
43 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Halfmoon Pond RD over Halfmoon Pond Outlet is a wood or timber slab carrying Halfmoon Pond RD over Halfmoon Pond Outlet in Sullivan 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 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 43 ft (13.1 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesHalfmoon Pond RD
CrossesHalfmoon Pond Outlet
Location0.55 MI Nh 31
Coordinates43.17582, -72.0852
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75.6 US tons
Inventory rating56.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 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 Halfmoon Pond RD over Halfmoon Pond Outlet built?

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

What condition is Halfmoon Pond RD over Halfmoon Pond Outlet 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 September 2024.

How much traffic does Halfmoon Pond RD over Halfmoon Pond Outlet carry?

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

How long is Halfmoon Pond RD over Halfmoon Pond Outlet?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Halfmoon Pond RD over Halfmoon Pond Outlet?

It is owned by the City or Municipal Highway Agency.