Live Chat I-66 Community Nearby Traffic Water Treatment Plant (Water weir) 2024-05-05 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Water Treatment Plant (Water Weir) Rockville, MD 6.91 Bethesda, MD 7.03 Cabin John, MD 7.54 Interstate highway exits close to Water Treatment Plant (Water Weir) Exit 4b a, i270md 4.60 Exit 2, i270md 4.92 Exit 38, i495md 4.99 Interstate highways close to Water Treatment Plant (Water Weir) i270md map 4.60 i495md map 4.99 i495va map 4.99 State roads close to Water Treatment Plant (Water Weir) MD 189 map 0.41 MD 190 map 1.94 MD 191 map 3.84