US Bridges

Goodwin Road over Gunstock River

Good

Belknap County, New Hampshire · 0.4 MI FR Hoyt Road · Structure no. 009101580009000

Built
1940
85 years old, rebuilt 1991
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
322
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Goodwin Road over Gunstock River is a steel stringer/multi-beam or girder carrying Goodwin Road over Gunstock River in Belknap County, New Hampshire. It was built in 1940 and reconstructed in 1991, so it is 85 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 322 vehicles a day, roughly 4% of them trucks, projected to reach 476 by 2043. The structure is 21 ft (6.4 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesGoodwin Road
CrossesGunstock River
Location0.4 MI FR Hoyt Road
Coordinates43.53716, -71.40497
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionAugust 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.5 US tons
Inventory rating50.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length21 ft (6.4 m)
Longest span18 ft (5.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic322 (2023)
Projected traffic476 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Goodwin Road over Gunstock River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1991.

What condition is Goodwin Road over Gunstock River 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 August 2024.

How much traffic does Goodwin Road over Gunstock River carry?

About 322 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Goodwin Road over Gunstock River?

The structure is 21 ft (6.4 m) long with a longest span of 18 ft (5.5 m) and a deck 27 ft wide.

Who owns Goodwin Road over Gunstock River?

It is owned by the City or Municipal Highway Agency.