Main Street Covington Director Josephine Kelly has resigned, effective June 7, to pursue starting her own company. Former Covington city manager Steve Horton will serve as interim director while the city looks for a replacement.Kelly said Tuesday afternoon she’s been director for more than 12 years, but she decided the time was right to start her own small business, which will operate in a similar vein as Main Street Covington by providing marketing services for small businesses. She submitted her letter of resignation to the city Friday.