Rte I81 over Ridge Road Trout Brook
Cortland County, New York · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte I81 over Ridge Road Trout Brook in Cortland County, New York, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 9,861 vehicles a day (traffic count year 2009).
- Its listed owner is the state highway agency.
- It is one of 96 of the 189 inventoried bridges in Cortland County rated fair (50.8%); 27 (14.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2023, 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 → (42.58639, -76.12763)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 271 ft |
| Location | 0.6 Mi S Jct Rts I-81 +41 |
| NBI structure number | 000000001031351 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New York department of transportation.
Busiest bridges in Cortland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I81 over West Branch Tioughnioga | 1966 | 25,286 | Fair |
| Rte 281 over Dry Creek | 2017 | 17,476 | Good |
| Rte I81 over Hunts Creek | 1966 | 16,872 | Fair |
| Rte 13 over Tioughnioga River | 2008 | 15,854 | Fair |
| Rte I81 over W Br Tioughnioga | 1966 | 14,138 | Good |
| Rte I81 over Rte 11 | 1966 | 13,527 | Fair |
All bridges nearby: Cortland County, NY bridge conditions · every bridge in Cortland County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.