Rte 23 over Mad Brook
Greene County, New York · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte 23 over Mad Brook in Greene 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 1938 and reconstructed in 1992, making it 87 years old at the 2025 inventory.
- It carries about 2,441 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 119 of the 228 inventoried bridges in Greene County rated fair (52.2%); 26 (11.4%) 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 → (42.30777, -74.24964)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 33 ft |
| Location | Rt 23 0.4 Mi W of Windham |
| NBI structure number | 000000001017710 |
| 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 Greene County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I87 over CSX Transportatio | 1955 | 37,426 | Fair |
| Rte I87 over Hannacrois Creek | 1955 | 37,426 | Fair |
| Rte I87 over New Baltimore Rd | 1952 | 37,426 | Fair |
| Rte I87 over Cauterskill Road Kaater | 1955 | 33,622 | Poor |
| Rte I87 over Catskill Creek | 1955 | 33,622 | Fair |
| Rte I87 over Leeds Athens Road | 1955 | 32,596 | Fair |
All bridges nearby: Greene County, NY bridge conditions · every bridge in Greene County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.