US Bridges

NH101 EB over Squamscott River

Good

Rockingham County, New Hampshire · At Stratham Town Line · Structure no. 008201060010000

Built
1998
27 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
880 ft
6 main spans
Daily traffic
24,304
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 EB over Squamscott River is a steel continuous stringer/multi-beam or girder carrying NH101 EB over Squamscott River in Rockingham County, New Hampshire. It was built in 1998, so it is 27 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 24,304 vehicles a day, roughly 5% of them trucks, projected to reach 35,969 by 2043. The structure is 880 ft (268.2 m) long and 51 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNH101 EB
CrossesSquamscott River
LocationAt Stratham Town Line
RouteState Highway 101
Coordinates42.99996, -70.93985
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length880 ft (268.2 m)
Longest span156 ft (47.5 m)
Deck width51 ft (15.5 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,304 (2023)
Projected traffic35,969 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 NH101 EB over Squamscott River built?

It was built in 1998, making it 27 years old in 2025.

What condition is NH101 EB over Squamscott 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 May 2024.

How much traffic does NH101 EB over Squamscott River carry?

About 24,304 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is NH101 EB over Squamscott River?

The structure is 880 ft (268.2 m) long with a longest span of 156 ft (47.5 m) and a deck 51 ft wide.

Who owns NH101 EB over Squamscott River?

It is owned by the State Highway Agency.