The following highways are numbered 506:
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The following highways are numbered 506:
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| Preceded by 505 | Lists of highways 506 | Succeeded by 507 |
Maryland Route 506 is a state highway in the U.S. state of Maryland. Known as Sixes Road, the state highway runs 3.79 miles (6.10 km) from MD 508 in Bowens east to MD 2/MD 4 near Port Republic. MD 506 provides access to Battle Creek Cypress Swamp. The state highway was constructed from MD 2 to the swamp in the early 1930s and extended to Bowens in the late 1950s.
Maryland Route 508 is a state highway in the U.S. state of Maryland. Known as Adelina Road, the state highway runs 1.20 miles (1.93 km) from MD 506 in Bowens north to MD 231 near Barstow. MD 508 was constructed in the early 1930s from MD 231 to Adelina. The southern terminus was rolled back to Bowens in the late 1950s.
