Pont du Gard Has Stood for 2,000 Years – But Why?

Some places just stop you in your tracks. The Pont du Gard is one of them. A massive, ancient structure rising from the landscape, it’s hard to believe it’s been here for nearly 2,000 years. The Romans built it to move water, but what they ended up creating was something that would outlast empires, revolutions, and centuries of wear and tear.

You can read about its engineering, height, and how many liters of water once flowed through it. That’s all interesting. But the real question is, how did it survive when so many other Roman structures crumbled? Who looked after it? And what odd little moments in history took place under its towering arches? Because a place like this has stories, and they’re the kind you won’t find in the guidebooks.

From stone masons to medieval toll collectors, the Pont du Gard has seen it all. If you think you know Roman aqueducts, think again. This one’s got a few surprises up its sleeve.

A Potted History of Pont du Gard

France is full of historic attractions. There is something for everyone, from ancient walled cities to attractions like Mont Saint Michel. But Pont du Gard is possibly one of the oldest, having stood for nearly two millennia. Its story isn’t just about the Romans who built it. 

Over the centuries, it’s been a vital part of daily life, repurposed, damaged, restored, and even danced upon. Every era has left its mark, from its precise construction to the toll collectors who once lined their pockets and the architects who saved it from ruin. 

A Roman Aqueduct Built to Last

The Romans didn’t mess around when it came to water. In the 1st century AD, they decided Nîmes (back then called Nemausus) needed a reliable supply. Natural springs near Uzès were the answer, but there was a problem—how do you get water across 50 kilometers of rough terrain without modern technology?

The solution? Build an aqueduct. Standing 48.8 meters high, Pont du Gard was the tallest aqueduct the Romans ever built, and they did it without mortar. Just thousands of precisely cut limestone blocks, some weighing up to six tons, stacked into a three-tiered bridge. 

The bottom level supported foot traffic, the middle added stability, and the top carried the water channel. Every stone was placed with meticulous accuracy. Over the entire 50-kilometer stretch of the aqueduct, the water dropped just 17 meters.

It worked flawlessly for nearly 500 years. Every day, 40,000 cubic meters of fresh water flowed into Nîmes, feeding its fountains, baths, and wealthy households. Then, after the fall of the Roman Empire, the system broke down. No one maintained the channels; mineral deposits clogged the pipes, and by the 6th century, the water stopped flowing. The aqueduct had lost its purpose, but the bridge was too valuable to be abandoned.

From Waterway to Toll Road

With no more water running through it, the Pont du Gard took on a new role, a river crossing. Bridges were expensive to build, and here was one already standing. By the Middle Ages, local lords saw an opportunity. 

In 1295, King Philippe le Bel granted the right to charge tolls for crossing, and for centuries, merchants, pilgrims, and farmers paid their dues to use it. Merchants transporting wine, salt, and textiles between Provence and Languedoc crossed with pack animals and carts. 

Pilgrims made their way toward Santiago de Compostela or local shrines, grateful for a safe crossing over the river. Farmers moved livestock across, paying per head of cattle or sheep. The more loaded the cart, the higher the fee.

But the bridge wasn’t designed for medieval traffic. As carts got wider, sections of the stonework were chipped away. The wear and tear left the structure fragile, but it was never completely abandoned because it still served a purpose.

By the 18th century, its condition was alarming. Large cracks had formed, and missing stones weakened the structure. That’s when the first real restoration efforts began.

A Bridge Saved by Kings, Emperors, and Architects

By the late 1700s, architects and historians were documenting France’s historical monuments, and the Pont du Gard was at risk of collapse. In 1743, a major restoration project was led by Henri Pitot, an engineer best known for his work in hydrodynamics. He reinforced the lower level with additional arches to prevent further damage.

Napoleon III took things further in the 1850s. He was fascinated by Roman engineering and ordered a full restoration of the bridge, entrusting the work to Charles Laisné, an architect who specialized in historic preservation.

Laisné meticulously replaced missing stones, repaired weakened sections, and reinforced the structure without altering its original Roman design. His efforts ensured the Pont du Gard would stand for future generations.

More work followed in the 20th century, including projects in the 1920s and again in the 1990s, when modern conservation techniques were applied to stabilize it. Finally, in 1985, UNESCO recognized its significance, designating it a World Heritage Site.

Lesser-Known Stories and Facts of Pont du Gard

Beyond its function as an aqueduct and toll road, it has left behind clues about the people who built it, crossed it, and preserved it.

The Workforce Behind the Bridge

Building something of this scale wasn’t a quick job. Around 1,000 men worked for five years to complete the Pont du Gard, using only hand tools, ropes, and sheer muscle power. The workforce included skilled Roman engineers, stonemasons, and laborers, many of whom were likely slaves or conscripted workers.

The limestone was quarried just upstream and transported along the Gardon River. The Romans marked each block with symbols and letters to show where it belonged, ensuring every stone fit precisely into place. 

Unlike most Roman structures, which relied on mortar, the Pont du Gard was built using a dry-stack technique. The weight of the stones and the precise cutting ensured stability, a method so effective that the bridge has remained standing for nearly two millennia.

Even more impressive is the aqueduct’s gradient. Over its entire 50-kilometer length, the water descends just 12.6 meters. That’s an astonishingly small slope, requiring precision calculations to keep the water flowing at just the right speed, fast enough to avoid stagnation but slow enough to prevent erosion.

What Floods Revealed About Roman Engineering

The Gardon River has a habit of flooding, sometimes violently. One of the worst floods on record happened in 2002, sending water levels surging up to the second tier of the bridge. The damage was severe, but it also unearthed something unexpected: traces of the hoisting devices the Romans used to lift the massive limestone blocks into place.

Archaeologists found evidence of wooden scaffolding supports and grooves in the stones where pulleys and lifting machines had been anchored. These findings confirmed what historians had long suspected: the Romans weren’t just skilled builders but also masters of construction logistics.

The flood also washed away centuries of accumulated debris, revealing details of the bridge’s surface that had been hidden for centuries. Among them were tool marks left by the original stonemasons and chisel lines that had been untouched since the day the stones were first placed.

The Marks Left Behind

For centuries, travelers and workers left their own traces on the Pont du Gard. Over 320 engravings have been identified, dating from the Middle Ages to the modern era. Among them are carvings made by the Compagnons du Tour de France, an elite brotherhood of craftsmen who traveled the country perfecting their trade.

Following a centuries-old tradition, these artisans carved their marks into the stones to honor the craftsmanship of the past. Some are simple initials, and others are intricate symbols representing their guilds. Not all of the markings are the work of skilled craftsmen. Some are graffiti left by soldiers, traders, and even tourists from the 19th century who couldn’t resist scratching their names into history. 

The Pont du Gard may have been built by Romans, but its story belongs to everyone who has passed under its arches.

Visiting the Pont du Gard Today

It’s one thing to read about the Pont du Gard. It’s another to stand beneath it, craning your neck to take in the towering arches or walking across its lower level, running your hand over limestone shaped by Roman masons. 

The Pont du Gard sits almost perfectly between Nîmes and Avignon, about 25 km (15 miles) from each. If you’ve got a rental car, it’s an easy 30-minute drive from either city, with well-signposted roads leading straight to the site. But if you’re relying on public transport, things get trickier. 

There’s no direct train, and buses aren’t exactly frequent. That’s why a tour is often the best bet, especially if you want the full experience without the hassle. Many tours combine the Pont du Gard with stops in Uzès or the Roman sites in Nîmes, giving you a proper deep dive into the region’s history rather than just a quick look at the bridge before figuring out how to get back.

Below is the tour I did, which I really enjoyed. I was staying in Avignon, so it worked well, as that’s where the tour started. My guide, Arnaud, was superb. He had amazing knowledge and was happy to answer the insane amount of questions I asked him.

What to Expect When You Visit

• The Museum – If you want to understand how the aqueduct worked, the on-site museum is worth a visit. Interactive exhibits break down the mechanics of Roman engineering, showing how the aqueduct was built and how it once delivered water to Nîmes. There are also archaeological finds and historical documents that shed light on the bridge’s long history.
• Scenic Walks – The trails around the Pont du Gard give you some of the best vantage points. Climb higher for panoramic views, or follow the paths down to the riverbanks, where you can see the reflection of the bridge in the water. Depending on the time of day, the light changes the look of the stone, making it a photographer’s dream.

Practical Information

• Amenities – There’s parking on-site, cafes, and a gift shop. If you’re visiting in the summer, bring water. Provence’s heat can be unforgiving, and there’s not much shade.

• Access – The site is open year-round, with open hours varying by season. 

Pin for Later