Rte 21 over Canisteo River

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

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

• Rte 21 over Canisteo River in Steuben 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 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1978, making it 47 years old at the 2025 inventory.
• It carries about 7,105 vehicles a day (traffic count year 2020).
• Its listed owner is the state highway agency.
• It is one of 329 of the 626 inventoried bridges in Steuben County rated fair (52.6%); 23 (3.7%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its class is unchanged from 2024 (fair), but component ratings moved: deck 6 to 7, substructure 5 to 6.
• Its most recent inspection on record is dated July 2024, on a 24-month routine inspection cycle.
• 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.

View this bridge on a map → (42.33929, -77.66467)

Component ratings

Bridge details

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

Busiest bridges in Steuben County

All bridges nearby: Steuben County, NY bridge conditions · every bridge in Steuben County · New York bridges.

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