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Primary sourceArtifact562

Sangarius Bridge

562

A surviving stone bridge built on the orders of Justinian I to improve communication across his empire.

Justinian ordered this bridge built to strengthen communication and military movement across his empire.

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Wide view along a long stone bridge with a paved stone deck and low parapet walls on both sides. A stone gateway arch stands at the far end, with hills, pine trees and houses behind, and two people walking on the deck.
Sangarius Bridge (Bridge of Justinian), Sakarya River, Turkey, completed 562.

About this source

What it is

The Sangarius Bridge, also called the Bridge of Justinian, is a late Roman stone bridge over the river Sakarya in modern Turkey, built around 562 on the orders of Emperor Justinian I. It replaced an earlier wooden pontoon bridge that often washed away in floods.

Why it matters

Contemporary poets Paul the Silentiary and Agathias celebrated its completion, and the historian Procopius described it as still under construction. The bridge improved communication between Constantinople and the empire's eastern provinces and shows Justinian's investment in infrastructure to strengthen and defend his territory.

Look closer

  • Why would an emperor want a strong stone bridge instead of relying on a wooden one?
  • What does the surviving inscription's language about enslaving the river tell us about how Byzantines described imperial power over nature?
  • How do written sources and the physical remains of the bridge work together to tell its history?

This artifact is part of the curated material that grounds the AI version of Justinian I on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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Secondary source

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Johann Friedrich Böck

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Corpus Juris Civilis

Tribonian · 528-534

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Secondary source

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Isidore of Miletus and Anthemius of Tralles · 532-537 CE

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