3. Sangarius Bridge

Constructed: 562 CE

Emperor: Justinian I

Use: Infrastructure

The Sangarius bridge is one of a handful of surviving bridges built during the Byzantine Empire. During the reign of Justinian I, the bridge was built over the Sakarya River. The bridge spans over 1400 feet and sits on 7 larger central arches and 5 smaller outer arches. It was built using the same techniques as many other medieval bridges. Justinian the Great commissioned the bridge as a way to make travel to the eastern provinces of the empire easier and it allowed troops and supplies to make their way from the capital to other places surrounding the Byzantine Empire.