Google has slowly changed how it displays driving directions to limit routes to ones it thinks burn less fuel. When plugging in the drive to get to my parents it presents one option that uses a ferry. The directions treat the ferry like a bridge that you could use at any time, and it no longer presents alternate routes that use actual roads.
The ferry runs twice a day.

@Apiary This malfeature got me real good in a foreign country. It was starting to get dark, and I was using a rental-car nav (not Google/Apple Maps). It took me to a dock that was closed for the season. Took a long time to drive around that lake. Made it to the inn minutes before they closed for the night.

In Google Maps it’s in [Tap your avatar] > Settings > Navigation > Route Options.

Everyone should check this, and recheck it before a long trip.

@jamiemccarthy @Apiary I don't have that setting in maps yet, thanks for the heads up!