US Bridges

Walnut Ave over I-95

Good

Rockingham County, New Hampshire · 0.5 MI JCT NH151 · Structure no. 019700890012300

Built
1975
50 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
289 ft
2 main spans
Daily traffic
995
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Walnut Ave over I-95 is a steel continuous stringer/multi-beam or girder carrying Walnut Ave over I-95 in Rockingham County, New Hampshire. It was built in 1975, so it is 50 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 995 vehicles a day, roughly 4% of them trucks, projected to reach 1,472 by 2043. The structure is 289 ft (88.1 m) long and 52 ft wide.

Location

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CarriesWalnut Ave
CrossesI-95
Location0.5 MI JCT NH151
RouteState Highway 0
CountyRockingham County
StateNew Hampshire
Coordinates42.98422, -70.85188
Functional classRural Local

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.
Last inspectionJuly 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 rating48 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length289 ft (88.1 m)
Longest span140 ft (42.7 m)
Deck width52 ft (15.7 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic995 (2023)
Projected traffic1,472 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Walnut Ave over I-95 built?

It was built in 1975, making it 50 years old in 2025.

What condition is Walnut Ave over I-95 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 July 2023.

How much traffic does Walnut Ave over I-95 carry?

About 995 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Walnut Ave over I-95?

The structure is 289 ft (88.1 m) long with a longest span of 140 ft (42.7 m) and a deck 52 ft wide.

Who owns Walnut Ave over I-95?

It is owned by the State Toll Authority.