Mexican Federal Highway 85
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Mexico's Federal Highway 85 starts at the U.S.-Mexico border in Nuevo Laredo, Tamaulipas. It runs through Monterrey, Nuevo León, Ciudad Victoria, Tamaulipas, Ciudad Valles, San Luis Potosí, and Pachuca, Hidalgo. It ends in Mexico City.
Federal Highway 85 is the original route of the Pan-American Highway from the border to the capital. Through most of Tamaulipas and Nuevo Leon, it is a freeway and is essentially a southern continuation of Interstate 35.