The southbound on-ramp for Interstate 55 at Center junction will be closed starting on Monday, June 21. Officials say Missouri Department of Transportation; this is at I-55 and U.S. Route 61 (mile marker 99) between Cape Girardeau and Jackson. Weather permitting; the ramp will be closed while contractor crews complete paving it. It will close at 5 a.m. on Monday and reopen around 6 p.m. on Friday, June 25. Officials say all other ramps will remain open.