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In page Inca road system:

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The use of the Inka roads, in the colonial period, after the Spanish conquest of Peru was mostly discontinued.[10] The Conquistadors used the Inka roads to approach the capital city of Cusco, but they used horses and ox carts, which were not usable on such a road, and soon most of the roads were abandoned. Only about 25 percent of this network is still visible today, the rest having been destroyed by wars (conquest, uprising, independence or between nations), the change in the economic model which involved abandoning large areas of territory, and finally the construction of modern infrastructure, during the nineteenth and twentieth centuries, which led to the superposition of new communication channels in the outline of pre-Hispanic roads.[11]