Pa 611 (lr 166) over Slateford Creek
Northampton County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Pa 611 (lr 166) over Slateford Creek in Northampton County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1909 and reconstructed in 1937, making it 116 years old at the 2025 inventory.
- It carries about 2,941 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (40.94728, -75.11437)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 4 | Poor condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 33 ft |
| Location | Slateford No.delaware Dr. |
| NBI structure number | 000000000028640 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
All bridges nearby: Northampton County, PA bridge conditions · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.