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Salmon River Road over Mad River

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

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

Salmon River Road over Mad River in Lewis County, New York, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2012, making it 13 years old at the 2025 inventory.
It carries about 55 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 59 of the 169 inventoried bridges in Lewis County rated good (34.9%); 26 (15.4%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 77 ft
Location	7.0 Mi SE of Rector
NBI structure number	000000003340310
Condition class	Good

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