Hi I am very much delighted to share you about one the oldest Bridge “The Tiberius Bridge”. I could not miss the opportunity to visit the place while visiting Rimini, Italy in November 2017 as It’s one of the oldest and best preserved bridge in the world.
The Tiberius Bridge is one of the oldest Bridge in Europe. The Bridge of Augustus and Tiberius, commonly known as the Bridge of Tiberius, whose first stone was laid down during Augustus reign in province of Rimini, Emilia-Romagna region in Italy. It is located on one of the ends of the city’s main street in Rimini.
In 14 A.D the Emperor Augustus ordered for building that bridge over the Marecchia River in Rimini to ensure as most important roads for connecting the Via Emilia with north route – the bridge set the milestone as the starting of Via Emilia. After Seven years in 21 AD the bridge was completed under the rule of new Emperor Tiberio. According to the inscription on the inner parapet of bridge has mentioned the names of both emperors.
After building the bridge, Rimini became a central crossroad in the road system of the Roman Italy. The new bridge did not just mark only the beginning of the Via Æmilia headed to the heart of Northern Italy to Bologna and Piacenza. But it was also the start of Via Popilia headed to Ravenna and Adria. In addition, also Via Flaminia towards Rome and the street that leads to Arezzo across the Apennines touched the city of Rimini.
Also, during 14 A.D. the colony of Rimini needed reconstruction of the infrastructures of its residential area after the Civil Wars and the bridge was also part of it.
As one of the old heritage, the bridge survives during many calamities with the glory by overcoming various natural disaster and battels risky pastures/events, such as from earthquakes, floods, from usury to war episodes - the attack inflicted by Narsete in 551, during the war between Goths and Byzantines of which the signs remain in the last arch towards the village of San Giuliano. Lastly during World War II in 1944, the Battle of Rimini took place between the Allied powers and Germany. In an attempt to stop the Allied offensive, the Germans destroyed all the bridges on the Marecchia River. But the Bridge of Tiberius faced every attempt of destruction, even the explosive charges failing to ignite.
There are many BRIDGES in Europe are still standing after two millennia. But, The Tiberius Bridge on the river Marecchia in Rimini which is one of the exception of few as still in use as important part of the road system as modern bridges. 
you have shared an article which amazed me a lot, astonishing matter that how could those ancient engineers build it that is surviving till date 
