Texas State Highway Loop 20

Loop 20, also known as the Bob Bullock Loop and Cuatro Vientos Road, is a highway loop that runs to the north and east of the city of Laredo, Texas. Loop 20 extends from the World Trade International Bridge at its northern point to Mangana-Hein Road at its southern point. The current route varies in construction from a 2-lane road (at its southernmost end) to a freeway with frontage roads (near the World Trade Bridge).

In recent years, much of Laredo's growth has been along Loop 20, with the construction of a new passenger terminal at Laredo International Airport, the Sames Auto Arena, the Uni-Trade Stadium, the new campus of Texas A&M International University, and Doctors Hospital being the most prominent projects.