https://www.chron.com/news/houston-texas/article/it-s-not-just-you-the-katy-freeway-is-15945843.php
It's strange that with all that extra highway width at least 2 additional express bus & HOV lanes weren't included.
https://cityobservatory.org/reducing-congestion-katy-didnt
A commuter train along that route would have also provided more efficiency & effectively moved a lot more people.