With what manpower? States are not set up to have borders closed, there are hundreds if not thousands of small roads to handle, and cases where entire cities st

With what manpower? States are not set up to have borders closed, there are hundreds if not thousands of small roads to handle, and cases where entire cities straddle land borders. Plus all the essential aspects are wide-ranging. Interstate goods transport still needs to occur. I know someone who works an essential job in sewer treatment across a state border. What sort of paperwork would he need to go back and forth for that, and what sort of commute time issues would be inflicted with a checkpoint and/or need to re-route past blocked routes?