I saw that paint on the ground too this morning, if they go and close without notice I'll be ticked off and all over the city about in online.
I'll be mad online.
Edit: If is is CPR I wouldn't be surprised to see them just go and do it, that's about the attitude I expect from them as a corporate citizen in this city.
Double edit: Nothing on the city pathway closure page here
http://www.calgary.ca/CSPS/Parks/Pag...-closures.aspx