US Bridges

Nh 11 over Nhrr(abd)

Good

Merrimack County, New Hampshire · 1.4 Miles from Wilmot T/L · Structure no. 000800570010300

Built
2010
15 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
5,615
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 11 over Nhrr(abd) is a concrete culvert carrying Nh 11 over Nhrr(abd) in Merrimack County, New Hampshire. It was built in 2010, so it is 15 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 5,615 vehicles a day, roughly 7% of them trucks, projected to reach 8,310 by 2043. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNh 11
CrossesNhrr(abd)
Location1.4 Miles from Wilmot T/L
RouteState Highway 11
CountyMerrimack County
StateNew Hampshire
Coordinates43.43781, -71.85966
Functional classRural 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
Culvert8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating91.6 US tons
Inventory rating54.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.8 m)
Longest span22 ft (6.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,615 (2023)
Projected traffic8,310 by 2043
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed11.2 mi (18 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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nh 11 over Nhrr(abd) built?

It was built in 2010, making it 15 years old in 2025.

What condition is Nh 11 over Nhrr(abd) 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 May 2024.

How much traffic does Nh 11 over Nhrr(abd) carry?

About 5,615 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 11 over Nhrr(abd)?

The structure is 22 ft (6.8 m) long with a longest span of 22 ft (6.8 m).

Who owns Nh 11 over Nhrr(abd)?

It is owned by the State Highway Agency.