Location: US 30 and Michigan St, Plymouth Reassurance shield after the SR 17 exit. Location: US 30 and Michigan St, Plymouth Redundancy is good. Location: US 30 and Michigan St, Plymouth Just after SR 17, we’ll approach US 31. Location: US 30 and US 31, Plymouth Exit in a half mile for US 31 south. … Continue reading U.S. Route 30, IN-17 to US-31