Mill Road over West Branch Chester CR.
Delaware County, Pennsylvania · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mill Road over West Branch Chester CR. in Delaware County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 1,254 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 97 of the 389 inventoried bridges in Delaware County rated good (24.9%); 43 (11.1%) are rated poor.
- 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 → (39.89472, -75.53644)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 34 ft |
| Location | Concord;thornbury 32a09 |
| NBI structure number | 000000000015358 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in Delaware County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 95 over Ridley Creek & Sun Drive | 1965 | 218,717 | Fair |
| Interstate 95 over Bullens Lane (turnback) | 1975 | 218,717 | Fair |
| Interstate 95 over Darby Creek | 1975 | 161,622 | Fair |
| Interstate 95 over Ramp E &ramp F to Barry | 1977 | 135,104 | Fair |
| Interstate 95 over Septa (not Active) | 1964 | 135,104 | Fair |
| Interstate 95 over Kerlin Street | 1964 | 135,104 | Fair |
All bridges nearby: Delaware County, PA bridge conditions · every bridge in Delaware County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.