US Bridges

Stinson Lake Road over Stinson Brook

Good

Grafton County, New Hampshire · 3.2 MI N of JCT RTE 25 · Structure no. 022501340012000

Built
1948
77 years old, rebuilt 1998
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
1 main span
Daily traffic
857
2023 count
Owner
State
State Highway Agency

About this bridge

Stinson Lake Road over Stinson Brook is a steel stringer/multi-beam or girder carrying Stinson Lake Road over Stinson Brook in Grafton County, New Hampshire. It was built in 1948 and reconstructed in 1998, so it is 77 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 857 vehicles a day, roughly 8% of them trucks, projected to reach 1,268 by 2043. The structure is 79 ft (24.2 m) long and 29 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesStinson Lake Road
CrossesStinson Brook
Location3.2 MI N of JCT RTE 25
RouteState Highway 0
CountyGrafton County
StateNew Hampshire
Coordinates43.83808, -71.81467
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating62.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length79 ft (24.2 m)
Longest span74 ft (22.7 m)
Deck width29 ft (8.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic857 (2023)
Projected traffic1,268 by 2043
Trucks8%
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 Stinson Lake Road over Stinson Brook built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1998.

What condition is Stinson Lake Road over Stinson Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Stinson Lake Road over Stinson Brook carry?

About 857 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Stinson Lake Road over Stinson Brook?

The structure is 79 ft (24.2 m) long with a longest span of 74 ft (22.7 m) and a deck 29 ft wide.

Who owns Stinson Lake Road over Stinson Brook?

It is owned by the State Highway Agency.