US Bridges

Nh 16 SP Tpk over New Bellamy Lane

Fair

Strafford County, New Hampshire · 0.6 MI from Jct. Rt. 16 · Structure no. 006501740006000

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
42,313
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 16 SP Tpk over New Bellamy Lane is a concrete culvert carrying Nh 16 SP Tpk over New Bellamy Lane in Strafford County, New Hampshire. It was built in 1955, so it is 70 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 42,313 vehicles a day, roughly 8% of them trucks, projected to reach 62,623 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesNh 16 SP Tpk
CrossesNew Bellamy Lane
Location0.6 MI from Jct. Rt. 16
RouteState Highway 16
CountyStrafford County
StateNew Hampshire
Coordinates43.14761, -70.84324
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.2 US tons
Inventory rating55.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,313 (2023)
Projected traffic62,623 by 2043
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nh 16 SP Tpk over New Bellamy Lane built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nh 16 SP Tpk over New Bellamy Lane 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 April 2023.

How much traffic does Nh 16 SP Tpk over New Bellamy Lane carry?

About 42,313 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Nh 16 SP Tpk over New Bellamy Lane?

The structure is 30 ft (9.1 m) long with a longest span of 26 ft (7.9 m).

Who owns Nh 16 SP Tpk over New Bellamy Lane?

It is owned by the State Toll Authority.