Abstract: A method of replacing an anchor bolt used to support a wind turbine to a foundation. The method includes providing the wind turbine and the foundation supporting the wind turbine. The foundation includes a lower base flange, at least one anchor bolt extending between the lower base flange and a lower tower flange of the wind turbine, and a rigid body at least partially formed around the at least one anchor bolt. The method further includes drilling a core in the lower tower flange and the rigid body circumferentially around the anchor bolt and removing the anchor bolt and the core to create a cavity. The method further includes inserting a replacement anchor bolt into the cavity and coupling the replacement anchor bolt to the lower base flange. The replacement anchor bolt may then be tensioned.