US Bridges

Nh 27 over I-95

Fair

Rockingham County, New Hampshire · .5 MI N. Hampton T.L. · Structure no. 011101130016800

Built
1976
49 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
294 ft
2 main spans
Daily traffic
10,248
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 27 over I-95 is a steel continuous stringer/multi-beam or girder carrying Nh 27 over I-95 in Rockingham County, New Hampshire. It was built in 1976, so it is 49 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 10,248 vehicles a day, roughly 10% of them trucks, projected to reach 15,167 by 2043. The structure is 294 ft (89.6 m) long and 57 ft wide.

CarriesNh 27
CrossesI-95
Location.5 MI N. Hampton T.L.
RouteState Highway 27
Coordinates42.95602, -70.85757
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating32.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length294 ft (89.6 m)
Longest span147 ft (44.8 m)
Deck width57 ft (17.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,248 (2023)
Projected traffic15,167 by 2043
Trucks10%
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 Nh 27 over I-95 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Nh 27 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 May 2023.

How much traffic does Nh 27 over I-95 carry?

About 10,248 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Nh 27 over I-95?

The structure is 294 ft (89.6 m) long with a longest span of 147 ft (44.8 m) and a deck 57 ft wide.

Who owns Nh 27 over I-95?

It is owned by the State Toll Authority.