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The stone pilings of the Roman Bridge date from A.D. 144-152 and are deeply embedded in the bedrock underneath the river gravel. They were built with huge stone blocks held together with iron clamps like the Porta Nigra. The Roman clamps are not visible inside the pilings; the clamps that are now visible are from later times. The black colouring is genuine as the stone is mostly whinstone from the Eifel National Park.
The upper part was renewed twice, in the early 12th and in the early 18th century, after suffering destruction in war.
Always open.
Free admission.