Temporary but long-term road closure

Communities Oceania
1

Should a road that will be closed for more than a year be marked as such? If so, how?

2

I would.

  1. closed for everyone?
    access=no
    note=*

  2. in construction?
    highway=construction
    note=*

  3. some router/renderer interpret Conditional (Time) Restrictions
    https://wiki.openstreetmap.org/wiki/Conditional_restrictions