The basis for much of my exploration in Georgia, this subset of GDOT's road network contains Forest Service (I believe most are FS) roads with Gravel, Compacted Soil, Native or Other Material Surface Types and with an Operational Maintenance Level other than Closed. Meaning? Unpaved roads that are also open (or potentially open). There are many roads that I have found closed, but are likely not permanently closed. For instance, some may be closed seasonally only to reopen once conditions improve and the likelihood for damage due to weather and usage diminishes. The GDOT and FS roads are symbolized in orange in order to differentiate between the basemap roads sourced through GDOT and those I have personally captured with GPS (in red, see Cohutta post).
Download The Unpaved Georgia DOT and Forest Service Roads.kmz file.
View The Unpaved Georgia DOT and Forest Service Roads.kmz file in Google Maps.