US Bridges

I-93 NB over North Lowell Road

Good

Rockingham County, New Hampshire · .6 MI S of Derry Tl · Structure no. 028001050014200

Built
1998
27 years old, rebuilt 2021
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
41,528
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over North Lowell Road is a prestressed concrete stringer/multi-beam or girder carrying I-93 NB over North Lowell Road in Rockingham County, New Hampshire. It was built in 1998 and reconstructed in 2021, 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 41,528 vehicles a day, roughly 9% of them trucks, projected to reach 61,461 by 2043. The structure is 96 ft (29.3 m) long and 81 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesI-93 NB
CrossesNorth Lowell Road
Location.6 MI S of Derry Tl
RouteInterstate 93
CountyRockingham County
StateNew Hampshire
Coordinates42.83666, -71.29989
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length96 ft (29.3 m)
Longest span90 ft (27.4 m)
Deck width81 ft (24.7 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,528 (2023)
Projected traffic61,461 by 2043
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-93 NB over North Lowell Road built?

It was built in 1998, making it 27 years old in 2025. It was reconstructed in 2021.

What condition is I-93 NB over North Lowell Road 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 2023.

How much traffic does I-93 NB over North Lowell Road carry?

About 41,528 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 NB over North Lowell Road?

The structure is 96 ft (29.3 m) long with a longest span of 90 ft (27.4 m) and a deck 81 ft wide.

Who owns I-93 NB over North Lowell Road?

It is owned by the State Highway Agency.