US Bridges

Stinson Lake Road over Stinson Brook

Fair

Grafton County, New Hampshire · 1.8 MI JCT 25 · Structure no. 022501370009300

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 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 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 857 vehicles a day, roughly 10% of them trucks, projected to reach 1,268 by 2043. The structure is 68 ft (20.7 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
Location1.8 MI JCT 25
RouteState Highway 0
CountyGrafton County
StateNew Hampshire
Coordinates43.81938, -71.81065
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating36 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length68 ft (20.7 m)
Longest span59 ft (18 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

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

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

What condition is Stinson Lake Road over Stinson Brook 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 Stinson Lake Road over Stinson Brook carry?

About 857 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Stinson Lake Road over Stinson Brook?

The structure is 68 ft (20.7 m) long with a longest span of 59 ft (18 m) and a deck 29 ft wide.

Who owns Stinson Lake Road over Stinson Brook?

It is owned by the State Highway Agency.