Currently in WME segment history we can see that a closure was added and when it was added, but It doesn't contain any details about the duration of the closure itself. If a closure is manually deleted by an editor I believe that also shows up in the history, but when a closure expires naturally that is not captured.

It would be very useful if there was data about the actual closure itself. I'd like to at the very least be able to see when the RTC was scheduled to begin and end. This would help when there are URs about a road not being closed when, for instance, a road crew ends work earlier than it was planned to last.