Houston Highway Road Network:
I-610: South Loop Fwy / West Loop Fwy / North Loop Fwy / East Loop Fwy
Beltway 8
SHT: Sam Houston Tollway
TX-99: Grand Parkway
I-10: Katy Fwy / East Fwy
I-45: North Fwy / Gulf Fwy
I-69/US-59: Southwest Fwy / Eastex Fwy