In Texas, the speed limit along I-10 from Kerr County to El Paso County is 80 mph (130 km/h), the highest in the nation. However, the nighttime maximum speed limit remains 65 mph (105 km/h).
From the state line with New Mexico to State Highway 20 in west El Paso, I-10 is bordered by frontage roads Desert South for lanes along I-10 East (actually headed south) and Desert North for lanes along I-10 West (headed north). The interstate then has no frontage roads for nine miles but regains them east of downtown and retains them to Clint. In this stretch, the frontage roads are Gateway East for the Eastbound lanes and Gateway West for the Westbound lanes. All four frontage roads are one way streets.
A small portion of I-10 from Loop 1604 to downtown in San Antonio is known as the Northwest Expressway or the McDermott Freeway, while another portion from downtown to Loop 1604 East is called East Expressway or Jose Lopez Freeway.
In Houston, from the western suburb of Katy to downtown, I-10 is known as the "Katy Freeway." This section is currently being widened to as much as 26 lanes (12 mainlanes, 4 lanes of access roads, and 4-6 mid-freeway HOT/HOV lanes, not counting access road turning lanes) and will be one of the widest freeways in the world. The section east of downtown Houston is officially known as the "East Freeway," although it is widely known by locals as the "Baytown East Freeway" due to a marketing push by Baytown, the easternmost principal city of the Greater Houston Area.
In Beaumont, it is designated Eastex Freeway between both splits with U.S. Highway 69. Eastex is not to be confused with the designation for U.S. Highway 59 in Houston.
Interstate 10 Texas Descriptions - I10.mobi
