A portion of Third Street in Chillicothe is going to open Monday morning. The street had been closed for a construction project since late-July. According to M&M Utilities, Third Street from Highway 65 through the Locust Street intersection will open first thing on Monday morning. Chillicothe Street Superintendent Barry Arthur said all north and south intersections will also reopen. Work on the remaining portions of Third Street is expected to be complete by mid-week.