The Grand Parkway between Interstate 10 and U.S. 290 will be expanded from two to three lanes in each direction to help ease traffic congestion in a part of Harris County that is being rapidly developed.

https://www.houstonpublicmedia.org/articles/news/transportation/2025/08/08/528248/stretch-of-grand-parkway-in-western-harris-county-set-for-157-million-expansion/

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Stretch of Grand Parkway in western Harris County set for $157 million expansion

The Grand Parkway, also known as State Highway 99, will be widened between I-10 and U.S. 290, with construction expected to start next summer.

Houston Public Media