SH 99 Grand Parkway segment E - I-10 West to US 290
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SH 99 Grand Parkway segment E - I-10 West to US 290

Segment E is an existing 15.2-mile, four-lane, controlled access toll road with intermittent frontage roads from I-10 West (the Katy Freeway) near Katy to US 290 (Northwest Freeway) near Cypress through western Harris County.

Segment E is operated and maintained by TxDOT. Visit the TxTag website for more information.

The map below shows Segment E of the Grand Parkway. Each square indicates the limits of the detailed map of that portion of the segment. Select a link from the list below to view a detailed map of the segment. The detailed map will open in a separate window. The maps are large files and may be slow to download. Once in the detailed maps, use the zoom button in the toolbar to view the maps at 100 percent of their original size.

The latest approved environmental document for Segment E is the Revised Record of Decision (ROD), which was issued June 9, 2009.

Below are some of the other latest-approved Segment E environmental documents:

If you have questions about Segment E or would like to request any other environmental documents, please email the Houston District.