Fort Knox’s two Chaffee Avenue exit ramps to US 31W (Dixie Highway) will be temporarily closed beginning at noon April 4 for required maintenance.  An alternate means to reach US 31W from post is to exit through the Chaffee (main) Gate using Bullion Boulevard. At this time, it is estimated that the exit ramps will be closed for five days; however, a follow-on announcement will be made as soon as they reopen.