I want to create a route from Marquette, MI to Macinac, MI using the ferry. Is it not possible?
Thanks for letting us know. It seems that the island is not accessible by motor vehicles, here is a quote from Wikipedia:
Motor vehicles were restricted at the end of the nineteenth century because of concerns for the health and safety of the island’s residents and horses after local carriage drivers complained that automobiles startled their horses. This ban continues to the present, with exceptions only for city emergency vehicles (ambulance, police cars and fire trucks), city service vehicles, state park vehicles, and snowmobiles in winter.
That’s why Kurviger is not routing onto the island.