Visit the Ponte Dona Maria Pia - Santa Marinha (Vila Nova de Gaia)

Bridge of Don Maria Pia, also known as Ponte Maria Pia is a rail infrastructure over the Douro River, which connects the Town of Santa Marinha (Vila Nova de Gaia) to Oporto.
This bridge, made of metal, has a board with 352 meters long, the arch under the pan so biarticulated, has 160 feet of rope and 42.60 meters in height. The height from the water level was 61 meters.

Visit the Bridge of Ash - Oliveira do Douro (Vila Nova de Gaia)

The Bridge on the Ash is a road bridge over the River Douro, which connects the Town of Oliveira do Douro (Vila Nova de Gaia) in Porto, and was inaugurated in 1995.
Of the bridges connecting Porto to Vila Nova de Gaia, the Bridge is that Ash is the most upstream of the river Douro. Project by Prof. António Reis these are actually two bridges built side by side and 10 cm apart from each other. The bridge has eight spans, the main one being 150 m. It is a road bridge with eight-lane (four in each direction), but the board with a lot less than the quotas of all other bridges connecting Porto and Gaia.

Visit the Bridge of St. John - Oliveira do Douro (Vila Nova de Gaia)

The Bridge of San Juan is a rail infrastructure over the Douro River that connects the Town of Oliveira do Douro (Vila Nova de Gaia) in Porto.
This bridge is in multiple gantry solid, vertical pillars, with three spans, two sides of 125 meters and a central, 250 meters long, supported on two pillars in the river bed. It consists of one continuous piece, large, built of reinforced concrete and prestressed.
The main bridge has a superstructure formed by a beam-coffin of trapezoidal section, bicellular, with a height ranging up to 14 meters, in the sections on the pillars of the river, with 7 meters in the middle of the central span, both pathways railways are based directly on the slab above the beam-coffin.

Visit the Bridge over the River Tamega - St. Nicholas (March Canavezes)