Rte 20 over Callahan Brook
Madison County, New York · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte 20 over Callahan Brook in Madison County, New York, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1948, making it 77 years old at the 2025 inventory.
- It carries about 3,963 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 94 of the 176 inventoried bridges in Madison County rated fair (53.4%); 16 (9.1%) 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 July 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 → (42.89938, -75.65214)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 27 ft |
| Location | 41MI W Jct Rts 46+20 |
| NBI structure number | 000000001015810 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New York department of transportation.
Busiest bridges in Madison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I90 over Canastota Creek | 1951 | 35,041 | Fair |
| Rte I90 over Old Erie Canal | 1954 | 31,294 | Fair |
| Rte I90 over N Lake St | 1953 | 31,294 | Fair |
| Rte I90 over Oneida Creek | 1994 | 31,294 | Good |
| Rte I90 over Canaseraga Creek | 1951 | 19,091 | Fair |
| Rte 90 over Canaseraga Creek | 1951 | 17,521 | Fair |
All bridges nearby: Madison County, NY bridge conditions · every bridge in Madison County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.