US Bridges

Places Mill Road over Sunset Lake Outlet

Good

Belknap County, New Hampshire · 0.4 Gilmanton Tl · Structure no. 000600980017800

Built
2011
14 years old
Condition
Good
inspected September 2023
Type
Culvert
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Places Mill Road over Sunset Lake Outlet is a prestressed concrete culvert carrying Places Mill Road over Sunset Lake Outlet in Belknap County, New Hampshire. It was built in 2011, so it is 14 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, projected to reach 142 by 2043. The structure is 38 ft (11.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPlaces Mill Road
CrossesSunset Lake Outlet
Location0.4 Gilmanton Tl
CountyBelknap County
StateNew Hampshire
Coordinates43.46381, -71.29998
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.6 US tons
Inventory rating51.8 US tons

Structure

Structure typeCulvert
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length38 ft (11.7 m)
Longest span36 ft (11 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Places Mill Road over Sunset Lake Outlet built?

It was built in 2011, making it 14 years old in 2025.

What condition is Places Mill Road over Sunset Lake 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 2023.

How much traffic does Places Mill Road over Sunset Lake Outlet carry?

About 96 vehicles per day (2023 count).

How long is Places Mill Road over Sunset Lake Outlet?

The structure is 38 ft (11.7 m) long with a longest span of 36 ft (11 m).

Who owns Places Mill Road over Sunset Lake Outlet?

It is owned by the City or Municipal Highway Agency.