Inca Roads and Messengers

In the fifteenth century, Inca rulers based at Cusco, their capital in present-day Peru, expanded the Qhapaq Ñan across the central Andes. It connected highland basins, Pacific valleys and eastern slopes along routes Andean communities had used before imperial expansion. Roads carried armies, officials and ordinary travelers; relay runners carried official messages from post to post. This road system formed part of wider Inca history and society.

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Roads adapted to the Andes

The network reached its greatest extent in the fifteenth century, with four main routes from Cusco linked by smaller roads. Pedro Cieza de León, a Spanish chronicler writing in the mid-sixteenth century, describes a road ordered by Huayna Capac, an Inca ruler of the late fifteenth and early sixteenth centuries, between Cusco and Quito in present-day Ecuador. His account of the Cusco–Quito road describes paving level sections, cutting paths into slopes and rock, terracing mountain sides, supporting riverside stretches with walls, and adding steps and resting places in snowy country. Builders used different methods to meet the demands of steep slopes, ravines, rivers and high passes along one route.

Upkeep and local responsibility

Road construction depended on local service as well as engineering. Cieza says people went ahead of the Inca’s traveling party to clear weeds and loose stones, leaving a smooth surface for the ruler’s passage. He also describes neighboring villages supplying workers and provisions at road posts, with each province responsible for posts within its own boundaries. These duties reached coastal deserts and high mountain country, where communities worked with different materials and conditions.

Bridges at river crossings

Where routes met a gorge or river, bridges carried travelers across. The Inca road network used several forms of crossing, including suspension bridges made with braided grass and reed cables, stone bridges and floating reed crossings in marshes. A suspension bridge hangs its walkway from cables anchored on either side; twisting and braiding plant fibers makes ropes strong enough to support the crossing.

At Q’eswachaka in southern Peru, Quechua communities renew a grass-rope bridge each year. Families twist local grass into small cords, combine them into ropes, and braid the ropes into support cables tied to stone anchors. They weave the floor and handrails onto those cables. The annual rebuilding process shows how a rope crossing depends on recurring communal work as its plant-fiber materials wear.

Stations and relay runners

Way stations called tampus provided temporary lodging and stored provisions for officials, soldiers and workers. Smaller relay post houses served a separate communications role. Cieza reports that these roofed shelters stood about half a league apart. A league was a historical unit of distance. Each post had two attendants and food supplied by neighboring villages, while attendants rotated so the same people did not have to remain there permanently.

When a governor needed to send news to the Inca, a chaski, or relay runner, carried it to the next post and called the next runner forward. That runner continued the message while the first stopped to rest and eat from the station’s stores. Each runner covered a short stretch, handing the message onward. Cieza says this relay could carry news hundreds of leagues in what he describes as a short time.