City of Ferrysburg issued the following announcement on Oct 27.
This Sunday northbound US-31 will be reduced to one lane just north of Waverly Avenue and traffic will continue to be crossed over to the southbound side north of Jackson Street. During this stage, northbound US-31 traffic will NOT have access to M-104 and to 3rd Street. Traffic will be detoured north on US-31 to westbound Van Wagoner Street, southbound 174th Avenue/3rd Street and south on Pine Street to M-104.
Alternate route: Eastbound M-45 (Lake Michigan Drive) to northbound M-231 to eastbound M-104/eastbound I-96.
www.ferrysburg.org US-31 Bridge Construction Information
Original source can be found here.