Rte 58 over Black Lake S Channel

St. Lawrence County, New York · rated Good in the 2025 National Bridge Inventory

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

• Rte 58 over Black Lake S Channel in St. Lawrence 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 7 (good condition) on the 0-9 scale.
• It was built in 1995, making it 30 years old at the 2025 inventory.
• It carries about 834 vehicles a day (traffic count year 2018).
• Its listed owner is the state highway agency.
• It is one of 193 of the 313 inventoried bridges in St. Lawrence County rated good (61.7%); 18 (5.8%) 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.

View this bridge on a map → (44.51789, -75.58813)

Component ratings

Bridge details

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

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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.