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Beltway 8, a state highway, runs mostly along the frontage roads of the tollway, only using the main lanes where they are free between Interstate Highway 45 (North Freeway) and Interstate Highway 69 / U.S. 59 (Eastex Freeway). The main lanes elsewhere are the Sam Houston Tollway, a toll road owned and operated by the Harris County Toll Road Authority (HCTRA). East of Houston, the Tollway crosses the Houston Ship Channel on the Sam Houston Ship Channel Bridge, a toll bridge; this forms a gap in Beltway 8 between Interstate Highway 10 (Baytown-East Freeway) and State Highway 225 (La Porte Freeway).
Output:
is highway 8 in houston a toll road