Ron:
Talking about space shuttle pavement, I did a prelim. design on an assembled shuttle transporter and helped with the proposal prep. with one of the aerospace contractors, back in the day. We did not get that contract. But, I did design and build the railcars that transport the solid fuel rocket sections btwn. Utah and the Cape. Those railcars will easily be converted to general heavy duty service (or HWAH, high, wide and heavy service), with the removal of the cradles which supported the rocket cylinders.