 Further in town, the routes have an intersection with SRs 15/29 (West and East Main Streets) just before a railroad crossing.SR 15 briefly joins US 221/SR 56 from East Main Street for two blocks before turning left onto West Louisiana Avenue, where that route joins another concurrency with SR 78.At Metter Road, US 221/SR 56 intersects SR 46, then the name changes from North Second Street to Swainsboro Highway.