San Michele Bridge

The San Michele Bridge, also known as the Paderno Bridge, is a multi-level rail and road truss arch bridge across the Adda River in Lombardy, Italy. The bridge connects Paderno d'Adda, Lecco on the west bank with Calusco d'Adda, Bergamo on the east bank.

The cast-iron bridge was designed by Swiss engineer Jules Röthlisberger and completed in 1889. Not weld, the bridge consists of riveted beams held together by over 100,000 nails. The bridge crosses the upper Adda River gorge that divides the western and eastern parts of Lombardy. With a height of 85 m and a span length of 150 m, the San Michele Bridge was one of the largest arch bridges in the world at the time of its completion.

Source: Wikipedia