The Michigan Department of Transportation will close M-15 in Ortonville to replace a culvert. The closure will take place beginning 8 p.m. on Friday, July 13 and will end at 5 a.m. on Wednesday, July 18.MDOT is investing $476,000 to remove and replace an aging culvert at Duck Creek. Both northbound and southbound M-15 will be closing just north of South Street in Ortonville.