Mexican Federal Highway 180 follows the southern shore of the Bay of Campeche through Coatzacoalcos to the Yucatán Peninsula. Highway 180 and a rail line to Allende have been carried over the Coatzacoalcos River via the 1910 built "Coatza I" bridge for more than a century. A second cable stayed bridge known as "Coatza II" or "Antonio Dovalí Jaime" was built to the south to carry more road traffic over the river. It was constructed starting in 1979 and was opened by President Miguel de la Madrid Hurtado on 17 October 1984. "Coatza II" has a center span of and an overall length of . A ferry operates between the city of Coatzacoalcos and Allende, which in 2017 was supplemented by a underwater tunnel that carries four lanes of traffic.