 It also carries the unsigned SR 422.The only numbered routes to travel through downtown Athens are US 78 Bus., SR 10, and SR 15 Alt.. Inner/outer directions are used to sign the loop.Between exits 4 and 8, there is an eight-highway concurrency, consisting of US 29, US 78, US 129, US 441, SR 8, SR 10 Loop, SR 15, and SR 422 (counting the unsigned SR 422).