A permit was filed today for lane closures to install the tower crane. May 13 through May 16 is the date of the installation.
https://www.austintexas.gov/devrevie...erRSN=11503108
A permit was also filed for a "mat foundation" concrete pour May 6 through May 9. The Google tower had a mat foundation.
https://www.austintexas.gov/devrevie...erRSN=11503085