ORIGINAL CONCESSION (Aug. 27, 2004). Concession to operate, exploit, conserve and maintain the 1,679 m long bridge over the Coatzacoalcos River, including its accesses, located in Coatzacoalcos, Veracruz, at the 1+200 km, on the Matamoros-Cancun federal highway 180. The concession includes the right-of-way, works, constructions and other goods and accessories. From the generated revenues, at least 70% will be used to develop the project of the Tunnel, and up to 30% to cover the costs of operation, exploitation, conservation, maintenance of the bridge, administrative expenses and reserve fund, among others.