| State Highway Loop 20 | ||||
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| Bob Bullock Loop Cuatro Vientos Road |
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| Route information | ||||
| Length: | 24 mi (39 km) | |||
| Existed: | 1939 – present | |||
| Major junctions | ||||
| CW end: | MX 85D at Mexican border on World Trade International Bridge | |||
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| CCW end: | Mangana-Hein Road | |||
| Highway system | ||||
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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 Laredo Energy Arena, the new campus of Texas A&M International University, and Doctors Hospital being the most prominent projects.