No, it's indeed a temporary closure. I wasn't aware of the :conditional suffix, but is it really appropriate when there's a physical barrier?

The end date of the closure hasn't been posted, but according to https://lund.se/stadsutveckling-och-trafik/trafik--och-byggprojekt/trafik--och-stadsmiljo/2024-07-09-fardigstallande-av-gator-i-vipemollan-lund the whole project will last until the spring of 2025. I doubt the street is going to be closed that long, though.