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Directions to Porto Treatment Center (Calvert Treatment Facility)
From Anne Arundel County (Annapolis and Glen Burnie)	Route 2 South to Route 4 South to Prince Frederick. Turn left on Dare Beach Road. Turn right on Fairground Road. The facility is on the right.
From Charles County	Route 5 East. Turn left on Route 231 East , and then proceed straight across Route 4. At Main Street, turn left, and then take a right soon after onto Armory Road. Take the next right on Fairground Road. The facility is on the left after Crescent Court.
From Prince George's County	Route 4 South to Prince Frederick. Turn left on Dare Beach Road. Turn right on Fairground Road. The facility is on the right.
From St. Mary's County	Route 5 North. Turn right on 231 East, and then proceed straight across Route 4. At Main Street, turn left, and then take a right soon after onto Armory Road. Take the next right on Fairground Road. The facility is on the left after Crescent Court.
From the Capital Beltway (I-495) (Washington, D.C. and Suburbs)	Exit Route 4 South, then follow directions from Prince George's County.