US Bridges

Nh 10 over Mink Brook

Good

Grafton County, New Hampshire · 0.2 MI from Lebanon Tl · Structure no. 011400400004300

Built
2006
19 years old
Condition
Good
inspected April 2024
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
6,198
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10 over Mink Brook is a prestressed concrete slab carrying Nh 10 over Mink Brook in Grafton County, New Hampshire. It was built in 2006, so it is 19 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 6,198 vehicles a day, roughly 6% of them trucks, projected to reach 9,173 by 2043. The structure is 48 ft (14.6 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNh 10
CrossesMink Brook
Location0.2 MI from Lebanon Tl
RouteState Highway 10
Coordinates43.69293, -72.29056
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating83.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length48 ft (14.6 m)
Longest span48 ft (14.6 m)
Deck width42 ft (12.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,198 (2023)
Projected traffic9,173 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nh 10 over Mink Brook built?

It was built in 2006, making it 19 years old in 2025.

What condition is Nh 10 over Mink 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 April 2024.

How much traffic does Nh 10 over Mink Brook carry?

About 6,198 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Nh 10 over Mink Brook?

The structure is 48 ft (14.6 m) long with a longest span of 48 ft (14.6 m) and a deck 42 ft wide.

Who owns Nh 10 over Mink Brook?

It is owned by the State Highway Agency.