Md 2 & 4 over Quaker Swamp
Calvert County, Maryland · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Md 2 & 4 over Quaker Swamp in Calvert County, Maryland, 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 1987, making it 38 years old at the 2025 inventory.
- It carries about 27,798 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 16 of the 34 inventoried bridges in Calvert County rated good (47.1%); 0 (0.0%) 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 → (38.44681, -76.48093)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 23 ft |
| Location | 0.34 Mile South of Md 765 |
| NBI structure number | 100000040025030 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.
Busiest bridges in Calvert County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Md 2 SB over Hunting Creek | 1992 | 46,798 | Fair |
| Md 4 SB over Lyons Creek | 1959 | 46,661 | Fair |
| Md 4 NB over Lyons Creek | 1987 | 46,661 | Fair |
| Md 4 Nbr over Hall Creek | 1966 | 35,171 | Fair |
| Md 4 over Patuxent River & Town CR | 1977 | 28,338 | Fair |
| Md 2 & 4 over Johns Creek | 1987 | 26,941 | Fair |
All bridges nearby: Calvert County, MD bridge conditions · every bridge in Calvert County · Maryland bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.