 Another future road project may be an extension of Fieldstown Road east of U.S. 31 to connect to the Castle Pines development (which is in the city but only accessible via a roundabout route nearly long) and then across New Castle Road, and then further east to connect to Carson Road.Gardendale is located in an area that once yielded large amounts of coal.Gardendale is located at the southwestern end of one of the Appalachian ridgelines running from eastern Tennessee into northeast Alabama.