Do you want to force the GPS to send you via the Road Connection Between Promods Canada and Alaska - North to the Future?
This patch/add-on deletes the ferries between both Valdez and Homer to Washington, but keeps the ferry between Valdez and Homer.
Mod Patch for: https://truckymods.io/american-truck-simulator/maps/road-connection-between-promods-canada-and-alaska-north-to-the-future
Place above the Alaska NTTF RC's in your load order.