US Bridges

Connector Road over Pemigewasset River

Fair

Grafton County, New Hampshire · .04 MI S.E. JCT US 3 · Structure no. 014802210009600

Built
1937
88 years old, rebuilt 1998
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
1 main span
Daily traffic
3,301
2023 count
Owner
State
State Highway Agency

About this bridge

Connector Road over Pemigewasset River is a steel stringer/multi-beam or girder carrying Connector Road over Pemigewasset River in Grafton County, New Hampshire. It was built in 1937 and reconstructed in 1998, so it is 88 years old, older 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 3,301 vehicles a day, roughly 4% of them trucks, projected to reach 4,885 by 2043. The structure is 64 ft (19.5 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesConnector Road
CrossesPemigewasset River
Location.04 MI S.E. JCT US 3
RouteState Highway 3A
CountyGrafton County
StateNew Hampshire
Coordinates44.04676, -71.68546
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length64 ft (19.5 m)
Longest span59 ft (18.1 m)
Deck width41 ft (12.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,301 (2023)
Projected traffic4,885 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 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 Connector Road over Pemigewasset River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1998.

What condition is Connector Road over Pemigewasset 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 May 2024.

How much traffic does Connector Road over Pemigewasset River carry?

About 3,301 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Connector Road over Pemigewasset River?

The structure is 64 ft (19.5 m) long with a longest span of 59 ft (18.1 m) and a deck 41 ft wide.

Who owns Connector Road over Pemigewasset River?

It is owned by the State Highway Agency.