Potomac Illinois Traffic 2024-12-25 Roadnow Click for Real Time Traffic Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Potomac Illinois Armstrong, IL 7.88 mi Henning, IL 8.93 mi Collison, IL 10.30 miInterstate highway exits close to Potomac Illinois Exit 206, i74 20.16 mi Exit 200, i74 21.91 mi Exit 210, i74 21.96 miInterstate highways close to Potomac Illinois i74 map 20.16 mi i57 map 30.69 mi i72 map 45.45 miState roads close to Potomac Illinois US 136 IL map 0.04 mi IL 49 map 7.24 mi IL 1 map 12.61 mi