US Bridges

Stinson Lake Road over Brown Brook

Good

Grafton County, New Hampshire · 0.88 MI N Rumney Tl · Structure no. 007500730008400

Built
1900
125 years old, rebuilt 1994
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
258
2023 count
Owner
State
State Highway Agency

About this bridge

Stinson Lake Road over Brown Brook is a steel stringer/multi-beam or girder carrying Stinson Lake Road over Brown Brook in Grafton County, New Hampshire. It was built in 1900 and reconstructed in 1994, so it is 125 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 258 vehicles a day, projected to reach 381 by 2043. The structure is 41 ft (12.5 m) long and 28 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesStinson Lake Road
CrossesBrown Brook
Location0.88 MI N Rumney Tl
RouteState Highway 0
CountyGrafton County
StateNew Hampshire
Coordinates43.88924, -71.79364
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating94.1 US tons
Inventory rating56.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length41 ft (12.5 m)
Longest span36 ft (11 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic258 (2023)
Projected traffic381 by 2043
Trucks0%
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 Brown Brook built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1994.

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

About 258 vehicles per day (2023 count).

How long is Stinson Lake Road over Brown Brook?

The structure is 41 ft (12.5 m) long with a longest span of 36 ft (11 m) and a deck 28 ft wide.

Who owns Stinson Lake Road over Brown Brook?

It is owned by the State Highway Agency.