The U.S. Postal Service is making some changes, and Louisville is no exception. Louisville spokesperson David Walton says the national recession has sparked a rapid decline in first-class mail. Therefore, they’re revising their routes to make them more efficient. Walton says route changes aren’t that unusual."These particular route adjustments will be completed by February," says Walton "So right now, in the Louisville area, there are some of these route adjustments that have caused us to make some changes."Changes have already taken place."The Lyndon and downtown stations, those have already gone into effect," says Walton. "And starting this Saturday, there will be some changes at Hikes Point, Iroquois, and Valley Station offices."Walton says the rest of the adjustments will be in place by the end of this month, but residents shouldn’t notice a change in service, other than perhaps delivery times.