The Arkadiko Bridge: the oldest bridge still in use

Arkadiko Bridge is regarded by many archaeologists as the oldest bridge in the world still in use. Built around 1300 BC, it continues to be crossed today and stands out for the sheer longevity of its engineering.

Where is Arkadiko Bridge?

Situated on Greece’s Peloponnese peninsula, the Arkadiko Bridge lies near the road connecting the major archaeological sites of Tiryns and Mycenae, both recognised as UNESCO World Heritage Sites.

More than three millennia after it was built, the structure remains well preserved and still functions as a crossing for pedestrians and, from time to time, light vehicles-making it a rare case of ancient engineering in uninterrupted practical use.

What makes this bridge so special?

Researchers consider the Arkadiko Bridge to be the oldest bridge in the world still in operation. It formed part of the Mycenaean civilisation’s ancient road network, linking strategically important settlements in the late Bronze Age.

Archaeological studies suggest it served a military and logistical purpose, enabling quicker movement between urban centres and supporting the transport of people, goods and troops.

How did ancient engineering make it so durable?

The bridge was built from enormous stone blocks fitted together with great precision. Although the stones can look merely stacked, specialists believe many of the pieces were dressed to improve how they interlocked.

Smaller stones likely filled some of the gaps, increasing the overall stability. This approach helped the bridge endure for thousands of years with virtually no major structural changes.

Key construction features of Arkadiko Bridge

Despite its plain appearance, the bridge incorporates engineering choices that help explain its remarkable endurance over the centuries. Its main features include:

• Estimated construction date: 1300 BC
• 22 metres in length
• 5.6 metres in width
• Approximately 4 metres in height
• Built using Cyclopean masonry, with large limestone blocks
• Constructed without the use of mortar
• Designed for the passage of horse-drawn chariots

These dimensions indicate that the original builders intended a solid structure, wide enough to meet the demands of the period, including military movement.

Why does Arkadiko Bridge still attract attention?

While many modern structures require frequent repairs, the Arkadiko Bridge remains a symbol of the skill of Ancient Greek engineers and continues to draw the interest of tourists and researchers.

Its longevity shows that construction techniques developed more than 3,300 years ago were effective enough to last across millennia, turning the bridge into one of the most striking works in the history of engineering.