Dunsmuir Viaduct bike lane closure this morning

Anyone know why the bike lane on the Dunsmuir Viaduct was closed this morning and if it will be closed again in the future? Bike lane was closed, but car lane was open... Nothing listed on the CoV website and searching brings up nothing...

It was closed when I arrived at the viaduct at ~7:45am and then by the time I was going the opposite direction to leave downtown ~8:15am and it was open again.

The detour was well-marked at least, but it added a few minutes to daycare drop-off this morning that I didn't have to spare.