Pons Cestius is a three-span stone bridge over the Tiber River in Rome, connecting the Tiber Island with Trastevere. This is the first bridge to reach the island from the right bank of the Tiber.
The original version of this bridge was built between 62 and 27 BC. It was a 48 m long and 8.20 m wide building, consisting of a central span with 23.65 m span and two smaller side spans with a 5.80 m span. The bridge was built from tuff and travertine covered peppersin.
In the fourth century, Pons Cestius was rebuilt by Emperors Valentinian I, Valens and Gracjan. During the construction of the walls along the river embankment in 1888-1892 and the expansion of the west channel from 48 to 76 meters, the ancient bridge became too short and had to be demolished. In its place a new bridge was built, with three large arches, retaining the central arch, in which about 2/3 of the original material was used. After reconstruction, the bridge is now 80.40 m long.