You can download all KML files which are used to display rectangle view on this site or download a combined KML file. Download those files and open them on Google Earth.
Combined KML File:
[wpfilebase tag=fileurl path=’Maps–Primary/KML-files/MCADD Maps.kml’ linktext=’MCADD Maps’ /]
[wpfilebase tag=browser path=’Maps–Primary/KML-files’ /]