(Interstate 95/495) and proceed clockwise to Exit 11.**Take Exit 11, Pennsylvania Avenue, toward Upper Marlboro. Follow Pennsylvania Avenue to Rt. 301, Crain Highway, and take Crain Highway south toward Richmond. In approximately 5-6 miles, look for Croom Road on your left . Take Croom Road approximately 4-5 miles to a left turn onto Croom Airport Road, and follow Croom Airport Road into the parking lot.