Live Chat I-95 Community Nearby Traffic I 95 exit 21b a 2024-06-03 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to I-95 Exit 21b A Newtonville, MA 1.72 Watertown, MA 2.02 Brighton, MA 2.91 Interstate highway exits close to I-95 Exit 21b A Exit 17, i90 0.48 Exit 19, i90 3.48 Exit 16, i90 3.70 Interstate highways close to I-95 Exit 21b A i90 map 0.48 i95 map 5.57 i93 map 9.31 State roads close to I-95 Exit 21b A US 20 MA map 1.32 MA 30 map 2.33 MA 16 map 3.18