Wow, what a road- This one has it all- superb scenery, sublime corners, great surface, not too much traffic. This is one of the ultimate passes in the world and should not be missed by any riding enthusiast.
 
Riding east, staring from Zernez, you climb quickly up the mountain. There are some covered roadways, but generally there are just really nice, rhythmic sweeping corners. As it is Switzerland, most of the road surface is outstanding- but be prepared for a few road works as they like to keep it this way. About 7 Km up the valley you will find the turnoff for the toll tunnel to Livigno.
 
My suggestion, unless you need to be in Livigno within 30 minutes, is to keep on going towards Santa Maria. The road opens up a bit and just keeps getting better to the top. Once you have summated - the turns get a bit tighter, but what else would you expect on an alpine pass. Once down the ramp, everything opens up again and you have nice flowing corners all the way to Italy.
 
Enjoy this one!