US Bridges

Woodbury Avenue over SP Tpk US 4 Nh 16

Good

Rockingham County, New Hampshire · 0.8 MI FR Piscataqua DR · Structure no. 018501140010700

Built
2015
10 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
2 main spans
Daily traffic
8,800
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Woodbury Avenue over SP Tpk US 4 Nh 16 is a steel continuous stringer/multi-beam or girder carrying Woodbury Avenue over SP Tpk US 4 Nh 16 in Rockingham County, New Hampshire. It was built in 2015, so it is 10 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,800 vehicles a day, roughly 8% of them trucks, projected to reach 13,024 by 2043. The structure is 265 ft (80.9 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWoodbury Avenue
CrossesSP Tpk US 4 Nh 16
Location0.8 MI FR Piscataqua DR
RouteState Highway 0
CountyRockingham County
StateNew Hampshire
Coordinates43.10453, -70.81342
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.6 US tons
Inventory rating62.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length265 ft (80.9 m)
Longest span147 ft (44.8 m)
Deck width79 ft (24.1 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2023)
Projected traffic13,024 by 2043
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Woodbury Avenue over SP Tpk US 4 Nh 16 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Woodbury Avenue over SP Tpk US 4 Nh 16 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 2023.

How much traffic does Woodbury Avenue over SP Tpk US 4 Nh 16 carry?

About 8,800 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Woodbury Avenue over SP Tpk US 4 Nh 16?

The structure is 265 ft (80.9 m) long with a longest span of 147 ft (44.8 m) and a deck 79 ft wide.

Who owns Woodbury Avenue over SP Tpk US 4 Nh 16?

It is owned by the State Toll Authority.