Join author Lisa M. Russell on a tour through these icons of Georgia backroads .

At one time, Georgia had over 250 covered bridges. By 1955, that number had shrunk to 75. By the 1970s, only 25 remained. But thanks to preservationists and Georgia's Department of Transportation, sixteen historic bridges have endured. Meet the bridge builders--including an enslaved apprentice who out-built his "master," and travel back in time underneath the elegance of these simple yet masterfully crafted structures .