Any interesting roads to drive on around Austin, TX?

Despite having lived in/around Austin, TX for a few years, I still don’t know my around all that well. I’m looking for some interesting roads to take a trip on.

Currently, my favorite stretch is on FM1431 between Lago Vista and Marble Falls. It’s full of hills, dips, and turns, and one cattle guard. Unfortunately, they’ve been doing some work on it and have been erasing some of the more interesting bits. This is why I need to find a new favorite.

So, if you’ve been driving around the little town of Austin and have a favorite road please, please, share it.