US Bridges

Newbury Road over Connecticut River

Fair

Grafton County, New Hampshire · Vermont State Line · Structure no. 011700990014900

Built
1970
55 years old, rebuilt 2008
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
493 ft
3 main spans
Daily traffic
2,136
2023 count
Owner
State
State Highway Agency

About this bridge

Newbury Road over Connecticut River is a steel continuous stringer/multi-beam or girder carrying Newbury Road over Connecticut River in Grafton County, New Hampshire. It was built in 1970 and reconstructed in 2008, so it is 55 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 2,136 vehicles a day, roughly 10% of them trucks, projected to reach 3,161 by 2043. The structure is 493 ft (150.3 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesNewbury Road
CrossesConnecticut River
LocationVermont State Line
RouteState Highway 0
CountyGrafton County
StateNew Hampshire
Coordinates44.06581, -72.05132
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length493 ft (150.3 m)
Longest span194 ft (59.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,136 (2023)
Projected traffic3,161 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Newbury Road over Connecticut River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2008.

What condition is Newbury Road over Connecticut River 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 2024.

How much traffic does Newbury Road over Connecticut River carry?

About 2,136 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Newbury Road over Connecticut River?

The structure is 493 ft (150.3 m) long with a longest span of 194 ft (59.1 m) and a deck 31 ft wide.

Who owns Newbury Road over Connecticut River?

It is owned by the State Highway Agency.