Ken, I go across a brick walkway with a temporary track by pouring ballast or slag sand on top of the walkway to hold the temporary track in place.
but in 5 places I’ve actually removed the bricks for a permanent crossing of the brick paths. You can see 3 of these crossing in this picture.
These are the areas where I’ve been interested in the ladder method of roadbed contruction, because I get a fairly serious frost heave that needs to be worked back down every 2 or 3 years.