[1][2] At 62,500 m (38.8 mi), it is the eighth longest tunnel in the world.

Serving a population of 20 million, it runs from Mexico City to the Atotonilco Wastewater Treatment Plant in Hidalgo state.

It runs at a maximum depth of 200 meters (656 Feet) below ground level and has a discharge capacity of 150 m3/s.

In order to prevent collapse, the tunnel is constructed using a lining with segmental rings made of concrete and steel.

After completion, the tunnel was realized to have gone over budget and cost 30 billion pesos.