Download KML for use in Google Earth
Google has added support for KML in the browser version of Google Earth.
Download the KML above and follow these instructions to load it.
The file includes state-defined corridors and City of Austin-defined corridors.
I created this from the coordinates and elevations in the state statute and city ordinance text. No warranty, not guaranteed accurate, don't actually use this for construction, etc.
New: KML for the 5 Additional Corridors under consideration by city council in 2017
State law - City ordinance