Puente Metálico João Luis Ferreira, Railway and road bridge over the Parnaíba in Teresina, Brazil

The João Luís Ferreira bridge is a steel structure crossing the Parnaíba River between Teresina, Piauí, and Timon, Maranhão. It was designed by the German engineer Germano Franz and built with 702 tonnes of iron. It carries road traffic and the rail line used by the Teresina metro.

The structure was designed following German engineering plans and completed in 1939 after nearly two decades of construction. Its completion created the first permanent iron crossing over the river.

The bridge is named after João Luís Ferreira, and its opening on 2 December 1939 was attended by Getúlio Vargas, then president of Brazil. It was listed as Brazilian cultural heritage by IPHAN's advisory council on 11 September 2008, in the first integrated heritage-listing action undertaken in Piauí.

Crossing by car, bus, or rail is heavily used during daytime, especially in peak hours. It helps to be flexible with timing and prepared for congestion if you plan to stop or take photographs.

Before this crossing was built, dugout canoes were the only way to travel between the two city centers. The structure made possible the first fast and regular connection independent of water conditions.