US Bridges

Nh 33 over US 1 Bypass

Good

Rockingham County, New Hampshire · 0.6MI from JCT Rt 1 · Structure no. 021701830008700

Built
2013
12 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
136 ft
2 main spans
Daily traffic
6,466
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 33 over US 1 Bypass is a steel continuous stringer/multi-beam or girder carrying Nh 33 over US 1 Bypass in Rockingham County, New Hampshire. It was built in 2013, so it is 12 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 6,466 vehicles a day, roughly 5% of them trucks, projected to reach 9,569 by 2043. The structure is 136 ft (41.4 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNh 33
CrossesUS 1 Bypass
Location0.6MI from JCT Rt 1
RouteState Highway 0
CountyRockingham County
StateNew Hampshire
Coordinates43.06181, -70.77424
Functional classUrban Minor Arterial

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.3 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length136 ft (41.4 m)
Longest span67 ft (20.4 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,466 (2023)
Projected traffic9,569 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Nh 33 over US 1 Bypass built?

It was built in 2013, making it 12 years old in 2025.

What condition is Nh 33 over US 1 Bypass 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 June 2023.

How much traffic does Nh 33 over US 1 Bypass carry?

About 6,466 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nh 33 over US 1 Bypass?

The structure is 136 ft (41.4 m) long with a longest span of 67 ft (20.4 m) and a deck 38 ft wide.

Who owns Nh 33 over US 1 Bypass?

It is owned by the State Highway Agency.