Hradecky Bridge, Slovenia
Hradecky Bridge (Hradeckega most) is a cast iron arch bridge in Ljubljana, Slovenia.
Built in 1867, it is said to be one of the first hinged bridges in the world. It has three articulated arch ribs. The bridge was designed by Johann Hermann from Vienna, and the ironworks came from the Auersperg iron foundry in Dvor near Žužemberk
In 2010, it was removed from the location, renovated, and transferred to its current site in 2011, and is now used only by pedestrians and cyclists.
See Wikipedia entry.
The bridge ribs are assembled from a series of castings, each having bolted flanges at each end. These are unusual in having a tubular bottom section. Photographs here [1]