Emisor Oriente Tunnel

{{Short description|Tunnel in Mexico}}

{{Expand German|topic=struct|Túnel Emisor Oriente|date=November 2018}}

{{Infobox tunnel

| name = Emisor Oriente Tunnel

| image = Enrique Peña Nieto y Miguel Ángel Mancera. Túnel Emisor Oriente.jpg

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| caption = Enrique Peña Nieto and Miguel Ángel Mancera in the tunnel in 2013

| official_name = Túnel Emisor Oriente

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| location = Mexico City

| coordinates = Entrance: {{Coord|19.503338|-99.077452|type:landmark|display=inline}}
Exit: {{Coord|19.948116|-99.295649|type:landmark|display=inline}}

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| start = Mexico City

| end = Atotonilco Wastewater Treatment Plant in Hidalgo state

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| length = {{convert|62500|m|mi|1|abbr=on}}

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| lowelevation = maximum 200 metres below ground level

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The Emisor Oriente Tunnel, also known as the Túnel Emisor Oriente, Eastern Discharge Tunnel, Eastern Wastewater Tunnel, and East Issuing Tunnel, is a wastewater treatment tunnel in Mexico City, Mexico.{{cite web|url=http://www.poyry.com/projects/tunnel-emisor-oriente-mexico-city-mexico|title=Tunnel Emisor Oriente, Mexico City, Mexico|last=Anonymous|date=15 January 2015|website=Poyry.com}}{{cite web|url=http://www.water-technology.net/projects/tunnel-emisor-oriente-teo-mexico/|title=Tunnel Emisor Oriente (TEO), Mexico City|website=Water-technology.net}} At {{convert|62500|m|mi|1|abbr=on}}, it is the eighth longest tunnel in the world.

It was constructed between 2008 and 2019{{Cite web|url=https://www.animalpolitico.com/2019/12/tunel-emisor-oriente-inundaciones-inauguracion/|title=Tras 11 años de construcción, inauguran el Túnel Emisor Oriente|website=Animalpolitico.com|date=23 December 2019|access-date=14 February 2022}} using a tunnel boring machine. 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. This tunnel will help prevent flooding and serves as an alternate exit for the Emisor Central, another drainage tunnel.

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

The estimated cost for the tunnel was 15 billion pesos. After completion, the tunnel was realized to have gone over budget and cost 30 billion pesos.