Is it currently possible to drive from Durrës to Berat in Albania on the SH 4?

I'm intending to hitchhike from Durrës to Berat on the SH 4, which looks like the obvious route.

But when I Google Maps for driving directions between these two cities it tells to drive back up to Tiranë first.

Sometimes Google Maps has some glitches in its data but maybe this highway can't be used right now. Wikipedia mentions that part of it is under construction between Durrës and Rrogozhinë but when I zoom in I can see cars on it.

So it's unclear whether the route can be used but some parts are not up to highway spec or contain detours, or whether I really do have to go back to Tiranë. Does anybody know?