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Carleton Hill Road over Mohawk River

Coos County, New Hampshire · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Carleton Hill Road over Mohawk River in Coos County, New Hampshire, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1935, making it 90 years old at the 2025 inventory.
It carries about 451 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 10 of the 189 inventoried bridges in Coos County rated poor (5.3%); 10 (5.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the New Hampshire department of transportation.

Bridge	Built	Vehicles/day	Condition
US 2 Nh 16 over Moose River	1939	10,406	Good
Nh 16 over Moose Brook	1972	10,237	Fair
US 3 NH116 NH142 over Johns River	1938	9,718	Fair
US 2 US 3 over Israel River	1990	9,175	Good
US 3 over Upper Ammonoosuc River	1995	5,412	Good
US 2 over Recreational Trail	1960	5,195	Good