For centuries, Ronda’s was prized for its strategic position. More than half of the settlement was protected by cliffs as tall as 100 meters. Once the Muslim Moors captured the city in 713 AD, they erected city walls around the perimeter that didn’t have natural protection from the vertical cliffs. For almost 800 years, the city was basically impenetrable.
That is, until Christian forces were able to successfully block access to the town’s water via a mine that the Moors had built. With that, an era in Ronda had come to an end but a new one had started.
Lands were divided between knights and noblemen that had participated in the conquest. The city prospered. However, high taxes were imposed on those entering into the city walls and as a result, markets began to form outside of them.
It is at this point in the 15th century when Ronda’s strategic position above the Tajo gorge began to conflict with its need for expansion. Having a 100 meter high gorge is great for protection, but horrible if you need to cross to the other side for commerce.
The other side of the city was aptly named El Mercadillo (The Market). This new neighborhood saw the development of inns, taverns, hospitals and even the city’s bullring.
During this time, the only way to cross from one side to the other was to descend down to the Puente Viejo (Old Bridge) located at the bottom of the gorge and then hike to the top on the other side. Understandably, this caused a lot of hardship for those wanting to cross.
A NEW BRIDGE
By the beginning of the 18th century, Ronda knew it had to construct a proper bridge at the top of the gorge. But how could they cross the gap? Until this time, only a few arches had been built that reached the 30m marker set by the Romans centuries earlier. However, the new bridge design called for a single arch that spanned 35m across – a very ambitious goal.
In 1735, after only 8 months of construction, the bridge opened. Unfortunately, only 6 years later, it came crashing down into the gorge below, killing 50 people. The collapse seems to have been caused by a lack of proper support. Back then, there weren’t calculations to determine what was actually needed for the construction and instead it was more of a trial and error basis.
This was one of the last bridges to be built before modern engineering began with the world's first engineering school, the École Royale des Ponts et Chaussées which opened its doors in 1747 in France. Spain wouldn’t see its first engineering school until 1802.
A NEW, NEW BRIDGE
It took several years for the inhabitants of Ronda to recover and even begin to think about building another bridge after such a traumatic event. Imagine knowing the people who had died and then seeing the rubble from the fallen bridge at the bottom of the gorge for so many years – it was a painful reminder.
So when they finally started with the new Puente Nuevo that we see today, they didn’t want to take any chances. In fact, you could say that the underlying design was based on fear.
The architect José Martín de Aldehuela was selected to undertake the work on the bridge. Aldehuela was already famous for building cathedrals like the Malaga cathedral, and even the Bullring in Ronda.
However, the main reason the city selected him was due to his immense experience in constructing an 11km long aqueduct to bring water to Malaga. If anyone knew how to construct solid arches, it was him.
When work began on the new mammoth structure, a sophisticated set of pulleys and lifting equipment had to be developed to raise the quarried stones from the gorge below.
Finally, in 1793, the 98m tall (300 ft) bridge was opened, 34 years after its construction began. It remained the tallest bridge in the world until 1839, when the Caille suspension bridge in France surpassed it.
In today’s Puente Nuevo we can see how the ravine was practically solidified all the way across. The main arch that crosses the river is only 15m wide. Unlike most bridges that have ever been built, the Puente Nuevo becomes one with its surrounding, including the riverbed.
It’s almost difficult to see exactly where the cliff ends and the bridge begins. It’s no wonder why Ronda’s Puente Nuevo is such an icon. No bridge had been built like it before and it is highly unlikely anything will be built like it in the future.