US Bridges

NH101 EB over Lamprey River

Fair

Rockingham County, New Hampshire · .1 MI Raymond T.L. · Structure no. 007800360004200

Built
1963
62 years old, rebuilt 1985
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
2 main spans
Daily traffic
23,166
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 EB over Lamprey River is a steel stringer/multi-beam or girder carrying NH101 EB over Lamprey River in Rockingham County, New Hampshire. It was built in 1963 and reconstructed in 1985, so it is 62 years old, older than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 23,166 vehicles a day, roughly 7% of them trucks, projected to reach 34,285 by 2043. The structure is 120 ft (36.6 m) long and 49 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNH101 EB
CrossesLamprey River
Location.1 MI Raymond T.L.
RouteState Highway 101
CountyRockingham County
StateNew Hampshire
Coordinates43.03113, -71.14459
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length120 ft (36.6 m)
Longest span58 ft (17.7 m)
Deck width49 ft (14.8 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,166 (2023)
Projected traffic34,285 by 2043
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 NH101 EB over Lamprey River built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1985.

What condition is NH101 EB over Lamprey River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does NH101 EB over Lamprey River carry?

About 23,166 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is NH101 EB over Lamprey River?

The structure is 120 ft (36.6 m) long with a longest span of 58 ft (17.7 m) and a deck 49 ft wide.

Who owns NH101 EB over Lamprey River?

It is owned by the State Highway Agency.