For the records and also the fixme : 

Steps is not all the way. 
They opening it for the inauguration and probably also the fest about beliris. 

But this morning : all is closed , work are ongoing. 

From rue du Sceptre : on the footway part : they add wood as floor. 

From rue Gray : hard to see but they finished the missing part still on concrete fondation and sanding the steel part.  No definitive fence installed only the work one.

Tipicaly Brussels, i often go 2-3 day after an opening and this is a routine situation ... 