US Bridges

Nh 33 over I-95

Fair

Rockingham County, New Hampshire · 3.0MI S of Maine S/L · Structure no. 021701360012700

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
285 ft
2 main spans
Daily traffic
18,255
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 33 over I-95 is a steel continuous stringer/multi-beam or girder carrying Nh 33 over I-95 in Rockingham County, New Hampshire. It was built in 1971, so it is 54 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 18,255 vehicles a day, roughly 5% of them trucks, projected to reach 27,017 by 2043. The structure is 285 ft (86.9 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNh 33
CrossesI-95
Location3.0MI S of Maine S/L
RouteState Highway 33
CountyRockingham County
StateNew Hampshire
Coordinates43.05803, -70.80422
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length285 ft (86.9 m)
Longest span144 ft (43.9 m)
Deck width75 ft (22.8 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,255 (2023)
Projected traffic27,017 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
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 Nh 33 over I-95 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Nh 33 over I-95 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Nh 33 over I-95 carry?

About 18,255 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nh 33 over I-95?

The structure is 285 ft (86.9 m) long with a longest span of 144 ft (43.9 m) and a deck 75 ft wide.

Who owns Nh 33 over I-95?

It is owned by the State Toll Authority.