Here's an idea - refuse to send the feds any money.
I like the idea of starving the beast and it's occasionally been cussed and discussed on these threads over about the last year and a half with only minimal light being shed on the "issue". I trust someone somewhere within the bowels of the various state governments have looked at viable contingency plans, but that may be more wishful thinking than anything else.
There is no Highway Fund. Congress has spent it all. The deception foisted on the states is that they will be promised $$, but won’t deliver. States will continue obeying federales for nothing!