T-408 Nissley Road over Swarr Run
Lancaster County, Pennsylvania · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- T-408 Nissley Road over Swarr Run in Lancaster County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2010, making it 15 years old at the 2025 inventory.
- It carries about 930 vehicles a day (traffic count year 2011).
- Its listed owner is a town or township highway agency.
- It is one of 242 of the 801 inventoried bridges in Lancaster County rated good (30.2%); 87 (10.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: culvert 8 to 7.
- Its most recent inspection on record is dated October 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 → (40.08695, -76.3993)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 8 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 21 ft |
| Location | 2000 Ft South of SR 4020 |
| NBI structure number | 000000000046301 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 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 Pennsylvania department of transportation.
Busiest bridges in Lancaster County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 30 ; SR 0030 over Fruitville Pk; SR 4011 | 2000 | 141,059 | Fair |
| US 30; SR 0030 over Conestoga River | 1953 | 114,612 | Fair |
| US 30; SR 0030 over Pa 23 Walnut St | 1992 | 114,612 | Fair |
| US 30 over Pitney Rd | 2002 | 114,612 | Good |
| US 30; SR 0030 over Homeland Drive | 2002 | 114,612 | Good |
| U.S. 30 SR0030 over Nor/south&amtrak | 2002 | 103,831 | Good |
All bridges nearby: Lancaster County, PA bridge conditions · every bridge in Lancaster County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.