Live Chat I-66 Community Nearby Traffic Lock 20 (Tourist attraction) 2024-06-01 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Lock 20 (Tourist Attraction) McLean, VA 3.03 Vienna, VA 5.10 Cabin John, MD 6.50 Interstate highway exits close to Lock 20 (Tourist Attraction) Exit 44, i495va 3.58 Exit 44, i495dc 3.58 Exit 45b a, i495va 4.17 Interstate highways close to Lock 20 (Tourist Attraction) i495va map 3.58 i495dc map 3.58 i495md map 4.84 State roads close to Lock 20 (Tourist Attraction) VA 193 map 0.13 VA 7 map 2.98 VA 267 map 3.33