Stone Mountain Freeway Gwinnett County and have a partial interchange with Park Place Boulevard and Rockbridge Road. Just to the east of this interchange, the freeway ends and US 78/SR 10 continue to the east, locally known as Stone Mountain Highway. West of I-285, the speed limit is . East of the interchange with I-285, the limit rises to . Unlike Georgia's Interstate highways, the highway still has actual sequential exit numbers, rather than being mileage-based. There is no exit 6, which makes the exit numbering non-sequential. All of Stone Mountain Freeway is included as part of the National Highway System, a system
Standing Stone State Park is now Monterey. The park offers canoeing, camping, lodging, hiking and many other activities. Standing Stone State Park is situated atop the eastern section of the Highland Rim, a plateau-like upland that surrounds the Nashville Basin. The park is located roughly halfway between the rim's edge along the basin to the west and the higher Cumberland Plateau to the east. The Dale Hollow Lake impoundment of the Obey River dominates the area just a few miles to the north. Mill Creek, the park's major stream, flows down from its source on Reynolds Mountain (near Allons) to the east and winds