This one is in Monstein (17K, 1625 meters above sea level).
The next one is a place called Zugenschlucht (I think).
This is Viadukt in Wiesen (26K, 1195 masl).
This is in the town of Bergun (39K, 1365 masl).
I also found a video - it's shot in Scalettapass (60K, 2606 masl).
I'll post a link to my own photos as soon as I have them online.