The Arrabida bridge was inaugurated on June, 22, 1963. Concrete open spandrels deck arch bridge. Total length is 493 m. Beautiful modern practical construction.
This is the view from my window. The sunset over the Douro river, Atlantic ocean and Arrabida bridge.
The Arrábida bridge held, for quite some time, the world record for the "Longest Concrete Single Arch Bridge". It is still the 9th world's longest concrete arch bridge in the world.
Camera: Nikon D80, 4 sec, F 22, Fl 20 mm, Nikkor 18-70, ISO 100, no flash, tripod.