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
Indian Mountain State Park mining had become the mining companies' preferred coal extraction method. During this period, the Saxton Coal Company operated a large surface mine at what is now Indian Mountain State Park. In 1960, after the mine's coal resources had been exhausted and the mine abandoned, the City of Jellico obtained ownership of the mine and with the help of several state and federal agencies, began restoring the denuded, unattractive land. Indian Mountain State Park opened in 1971. Indian Mountain State Park currently maintains a campground with 49 fully equipped campsites, three picnic pavilions, and 3 walking trails. Indian Mountain Lake and