Weaver became the school's AD in 1997 and led it through two conference changes. (Jared C. Tilton/Getty Images)
Virginia Tech athletic director Jim Weaver will retire in December for health reasons, reports David Teel of the Daily Press in Newport, Va.
Associate AD Sharon McCloskey will step in on an interim basis.
Weaver has been battling Parkinson's disease and was told by doctors earlier this year that he needs both of his hips replaced, according to Teel. Weaver said those health concerns have made it difficult for him to travel regularly.
Weaver announced his fight with Parkinson's in 2006, saying at the time that he hoped to remain on the job at Virginia Tech for another 10 years.
Since assuming the role of athletic director in 1997, Weaver has presided over several upgrades to Virginia Tech's athletics facilities, including improvements to Lane
Stadium. The 68-year-old Weaver also oversaw the school's transition from the Atlantic 10 to the Big East and, in 2004, to the ACC.