Location: Katy Fwy and Bunker Hill Rd, Houston 1 mile until another Katy Tollway entrance. The control city for I-10 becomes “Downtown” Location: Katy Fwy and Blalock Rd, Spring Valley Keep left for the Katy Tollway as we enter the Houston enclave of Spring Valley Location: Katy Fwy and Silber Rd, Houston Shortly after that, … Continue reading U.S. Route 90, Sam Houston Tollway/TX-8 Beltway to I-610