There is a new No Wake Zone on Lake Martin after a fatal boating accident near The Ridge Bridge. This area is locally referred to as The Bridge to Nowhere near The Ridge Marina. The bridge is part of The Ridge Neighborhood crossing over to Chimney Rock Island.
New No Wake Zone Law
Lake Martin’s new no-wake zone, established by HB209, requires idle speed within 100 feet of any shoreline, dock, pier, boathouse, or other structure. It also prohibits wakeboarding and wakesurfing within 200 feet of such structures and in areas less than 400 feet wide. The law also restricts water sports between sunset and sunrise and requires Coast Guard-approved flotation devices.

Here is a link to the article by WSFA.
Lake Martin Buoy Placement Map
Lake Martin Resource Association created a buoy placement map. This map shows all locations of buoys.