Live Chat I-270 MD Community Nearby Traffic I-270 exit 21mm Traffic Roadnow AI Agent Live Update UPDATE NOW Let's chat about Exit 21mm - Community Forum> see also previous/next exit traffic: click anywhere on map to change location Click for Real Time Traffic Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Accidents near I-270 exit 21mmConstructions near I-270 exit 21mm Cities close to I-270 Exit 21mm Clarksburg, MD 6.3mi/9m Barnesville, MD 6.8mi/11m Boyds, MD 12.7mi/19m Interstate highway exits close to I-270 Exit 21mm Exit 22, i270md 1.3mi/1m Exit 18, i270md 5.5mi/7m Exit 26, i270md 5.3mi/6m Interstate highways close to I-270 Exit 21mm i270md map 0mi/0m i70 map 10.6mi/19m i495md map 22.9mi/30m State roads close to I-270 Exit 21mm MD 109 map 1.5mi/2m MD 75 map 2.6mi/4m MD 121 map 5.7mi/8m