Detters Mill Road over Tributary Conewago Creek
York County, Pennsylvania · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Detters Mill Road over Tributary Conewago Creek in York County, Pennsylvania, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1927, making it 98 years old at the 2025 inventory.
- It carries about 273 vehicles a day (traffic count year 2023).
- Its listed owner is a town or township highway agency.
- It is one of 61 of the 566 inventoried bridges in York County rated poor (10.8%); 61 (10.8%) 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 September 2024, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (40.03228, -76.9109)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Concrete |
| Length | about 34 ft |
| Location | 0.7 Mi N of SR 4014 |
| NBI structure number | 000000000038230 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.
Busiest bridges in York County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-83; SR 0083 over Pa Turnpike Ramp E | 1950 | 68,340 | Fair |
| I-83; York express over Penna Tpk I-76 | 1951 | 68,340 | Fair |
| I-83; SR 0083 over T-955; Limekiln Rd | 1952 | 68,340 | Poor |
| I-83; SR 0083 over Yellow Breeches Creek | 1952 | 68,340 | Fair |
| I-83; SR 0083 over US 30; SR 0030 | 1959 | 57,639 | Poor |
| I-83; SR 0083 over Trib to Codorus Creek | 1957 | 57,639 | Fair |
All bridges nearby: York County, PA bridge conditions · every bridge in York County · Pennsylvania bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.