There are evidences that the current rocket by SpaceX, Falcon 9 booster can be ferried on long distances on the regular road network. Long distance road ferry movements seems to be necessary because of the use of several launching pads, east coast and west coast, and a quite geographically dispersed industrial footprint. The size of the rocket seems to allow for passing under bridges and tunnels.
But how will this work with the future massive vehicle that is Starship? Crawlers will most probably be used on short distance, but is the system designed to avoid long distance road ferrying?