adlid
This does not appear to be feasible with conditional access, as there does not seem to be a way of saying "open at date and time X and onwards indefinitely" using the syntax. 

I have unmarked the roads as construction, since the report and elsewhere shows they have been cleared. The access restrictions have been retained and can be flipped on 17th at 9am.

Please take a look and let me know if I missed a way etc.