US Bridges

Nh 43 NH107 over Lamprey River

Good

Rockingham County, New Hampshire · 6.0 MI from Raymond Tl · Structure no. 006001440010900

Built
1984
41 years old
Condition
Good
inspected April 2024
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
6,595
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 43 NH107 over Lamprey River is a concrete frame carrying Nh 43 NH107 over Lamprey River in Rockingham County, New Hampshire. It was built in 1984, so it is 41 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 6,595 vehicles a day, roughly 4% of them trucks, projected to reach 9,760 by 2043. The structure is 29 ft (8.8 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNh 43 NH107
CrossesLamprey River
Location6.0 MI from Raymond Tl
RouteState Highway 107
Coordinates43.15055, -71.2337
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating40.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length29 ft (8.8 m)
Longest span25 ft (7.6 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,595 (2023)
Projected traffic9,760 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nh 43 NH107 over Lamprey River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nh 43 NH107 over Lamprey River 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 43 NH107 over Lamprey River carry?

About 6,595 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nh 43 NH107 over Lamprey River?

The structure is 29 ft (8.8 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.

Who owns Nh 43 NH107 over Lamprey River?

It is owned by the State Highway Agency.