Mill Street over Rock Run
Cecil County, Maryland · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mill Street over Rock Run in Cecil County, Maryland, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 0 (failed condition, out of service) on the 0-9 scale.
- It was built in 1940, making it 85 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2005).
- Its listed owner is the county highway agency.
- It is one of 6 of the 193 inventoried bridges in Cecil County rated poor (3.1%); 6 (3.1%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2011, 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 → (39.61542, -76.12317)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 0 | 0 | Failed condition, out of service |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 28 ft |
| Location | .01 Mi S. of Race Street |
| NBI structure number | 200000CEPD01010 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | October 2011 |
| 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 Maryland department of transportation.
Busiest bridges in Cecil County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over Mill Creek | 1963 | 89,058 | Fair |
| I-95 over Stream | 1963 | 89,058 | Fair |
| I-95 over Principio Creek | 1963 | 83,628 | Fair |
| I-95 over Md 824 | 1964 | 80,402 | Fair |
| I-95 over Northeast Creek | 1963 | 78,625 | Fair |
| I-95 over Little Northeast Creek | 1963 | 78,625 | Fair |
All bridges nearby: Cecil County, MD bridge conditions · every bridge in Cecil County · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.