Trajan's Bridge - Credit: Wikimedia Commons
Trajan's Bridge - Credit: Wikimedia Commons
Trajan's Bridge (; ), also called Bridge of Apollodorus over the Danube, was a Roman segmental arch bridge, the first bridge to be built over the lower Danube and one of the greatest achievements in Roman architecture. Though it was only functional for 165 years, it is often considered to have been the longest arch bridge in both total and span length for more than 1,000 years.The bridge seems to have been surpassed in length by another Roman bridge across the Danube, Constantine's Bridge, a little-known structure whose length is given at 2,437 m (; ). In China, the 6th century single-span Anji Bridge had a comparable span of . Read more on Wikipedia
Source: en.wikipedia.org