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Rte 3 over Mohawk Adir & No

Lewis County, New York · rated Fair in the 2025 National Bridge Inventory

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

Rte 3 over Mohawk Adir & No in Lewis County, New York, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1987, making it 38 years old at the 2025 inventory.
It carries about 3,138 vehicles a day (traffic count year 2016).
Its listed owner is the state highway agency.
It is one of 84 of the 169 inventoried bridges in Lewis County rated fair (49.7%); 26 (15.4%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous prestressed concrete multiple box beam
Length	about 153 ft
Location	0.3 m E of Harrisville
NBI structure number	000000001000650
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Rte 12 over Mill Creek	1913	11,108	Fair
East State Street over Mill Creek	1963	6,160	Fair
Rte 12 over Mohawk Adirondack & Nort	1950	5,391	Fair
Rte 12 over Whetstone Creek	1989	5,059	Fair
Rte 12 over Roaring Brook	1989	5,059	Fair
Rte 12 over House Creek	1964	4,976	Good