Narrows Road over Slader Creek
Allegany County, New York · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Narrows Road over Slader Creek in Allegany County, New York, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1932 and reconstructed in 2019, making it 93 years old at the 2025 inventory.
- It carries about 38 vehicles a day (traffic count year 2019).
- Its listed owner is a town or township highway agency.
- It is one of 153 of the 403 inventoried bridges in Allegany County rated good (38.0%); 27 (6.7%) 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 December 2023, on a 24-month routine inspection cycle.
- 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 → (42.43191, -77.78135)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 9 | 9 | Excellent condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 62 ft |
| Location | 1.7 Mi S of Canaseraga |
| NBI structure number | 000000002214400 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 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 Allegany County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte 417 over Crowner Brook | 2007 | 11,348 | Good |
| Rte 417 over Genesee River | 1988 | 11,348 | Fair |
| Rte 19 over Dyke Creek | 1975 | 7,848 | Fair |
| County Road 20 over N Br Van Campen C | 2010 | 7,246 | Good |
| Rte 19 over Vandermark Creek | 1996 | 6,706 | Fair |
| Rte 21 over Karr Valley Creek | 1990 | 6,130 | Fair |
All bridges nearby: Allegany County, NY bridge conditions · every bridge in Allegany County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.