US Bridges

Nh 10A Wheelock ST over Connecticut River

Fair

Grafton County, New Hampshire · 0.1 MI from Vermont Sl · Structure no. 011400260005600

Built
1998
27 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
465 ft
3 main spans
Daily traffic
12,683
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 10A Wheelock ST over Connecticut River is a steel continuous stringer/multi-beam or girder carrying Nh 10A Wheelock ST over Connecticut River in Grafton County, New Hampshire. It was built in 1998, so it is 27 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 12,683 vehicles a day, roughly 6% of them trucks, projected to reach 18,770 by 2043. The structure is 465 ft (141.8 m) long and 65 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesNh 10A Wheelock ST
CrossesConnecticut River
Location0.1 MI from Vermont Sl
RouteCity Street 10A
CountyGrafton County
StateNew Hampshire
Coordinates43.7036, -72.29946
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length465 ft (141.8 m)
Longest span190 ft (57.9 m)
Deck width65 ft (19.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,683 (2023)
Projected traffic18,770 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes

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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nh 10A Wheelock ST over Connecticut River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Nh 10A Wheelock ST 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 August 2024.

How much traffic does Nh 10A Wheelock ST over Connecticut River carry?

About 12,683 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Nh 10A Wheelock ST over Connecticut River?

The structure is 465 ft (141.8 m) long with a longest span of 190 ft (57.9 m) and a deck 65 ft wide.

Who owns Nh 10A Wheelock ST over Connecticut River?

It is owned by the State Highway Agency.