There’s a big billboard style sign saying to take the trail. I would only utilize taking Grand Marais rd (H58) if you have to (for lodging, fuel, emergency, etc) just my 2 centsThere used to be "no snowmobiles" signs when coming from the east to keep sleds on the designated trail.
I don't recall seeing those signs in the last few times I've been through there, but the majority of traffic still runs the signed trail.
There’s a big billboard style sign saying to take the trail. I would only utilize taking Grand Marais rd (H58) if you have to (for lodging, fuel, emergency, etc) just my 2 cents