 After Brinson, the route curves northeast, and then northwest, to meet its northern terminus, an intersection with US 27/SR 1 in Colquitt.The roadway continues as SR 45 Connector (South 1st Street).Considering that, only a year after the highway was commissioned, the Miller County section of the highway was decommissioned, leaving the Brinson section of SR 310 as a double spur in Decatur County, ending at the Miller County line to the north and Lake Seminole to the south with the other section of the highway across the lake.