The Coatzacoalcos Underwater Tunnel opened with a formal dedication on April 27, 2017, at a cost of 5.398 billion pesos — a 256% increase over the original budget. Speaking at the dedication, Governor Miguel Ángel Yunes Linares suggested that the tunnel be known as the Túnel Puerto México, in honor of one of the former names of Coatzacoalcos. A piece of concrete fell from the ceiling of the eastbound (Coatzacoalcos-Allende) tunnel during the 2017 Chiapas earthquake.