The downstream ferry service at Mannum will be temporarily closed on Thursday, March 26, from 10am to 3pm.
Weather permitting, the Department of Planning, Transport and Infrastructure's five-hour closure allows programmed maintenance to take place.
The alternative crossing available will be the Mannum Upstream Ferry.
The department thanked ferry users in advance for their understanding and patience.
For more information about ferry locations and operational statuses, visit www.sa.gov.au/topics/boating-and-marine/river-murray-ferries/ferry-locations-and-operational-status