Porto’s Maria Pia Bridge was built by Gustave Eiffel of Paris Tower fame in 1877. It used to carry the railway over the River Douro.

Behind it is the Ponte de São João or St John’s Bridge, which now carres the rail traffic.

Closer view:-

Maria Pia Bridge, Porto, Reverse View. Infante D Henrique Bridge in background:-

North support, Maria Pia Bridge:-