Or silcocks with the valve well inside the structure (and pipes routed inside). For once in 120 year problem, it's probably more expensive than it's worth, if anyone in Texas even remembers how to do it.
When I lived in Vermont, one Winter we had water mains 7' down, freeze. It got very cold right after a good thaw. The saturated soil allowed the frost line to go down very deep, very fast.
I did have a frost-free silcock freeze once. I forgot a hose connected to it. As it froze, the silcock froze and cracked because it couldn't drain.