US Bridges

Dolly Copp Road over Peabody River

Good

Coos County, New Hampshire · .46 Mi. S. Gorham T.L. · Structure no. 016451090018700

Built
1950
75 years old, rebuilt 1994
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
125 ft
2 main spans
Daily traffic
441
2023 count
Owner
State
State Highway Agency

About this bridge

Dolly Copp Road over Peabody River is a steel stringer/multi-beam or girder carrying Dolly Copp Road over Peabody River in Coos County, New Hampshire. It was built in 1950 and reconstructed in 1994, so it is 75 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 441 vehicles a day, roughly 10% of them trucks, projected to reach 652 by 2043. The structure is 125 ft (38.1 m) long and 26 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesDolly Copp Road
CrossesPeabody River
Location.46 Mi. S. Gorham T.L.
RouteState Highway 0
CountyCoos County
StateNew Hampshire
Coordinates44.33617, -71.21223
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 protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckClosed grating
Main spans2
Design loadHS 20 + Mod
Structure length125 ft (38.1 m)
Longest span60 ft (18.3 m)
Deck width26 ft (7.8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic441 (2023)
Projected traffic652 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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 Dolly Copp Road over Peabody River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1994.

What condition is Dolly Copp Road over Peabody 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 April 2023.

How much traffic does Dolly Copp Road over Peabody River carry?

About 441 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Dolly Copp Road over Peabody River?

The structure is 125 ft (38.1 m) long with a longest span of 60 ft (18.3 m) and a deck 26 ft wide.

Who owns Dolly Copp Road over Peabody River?

It is owned by the State Highway Agency.