The Pontcysyllte Aqueduct is a navigable aqueduct that carries the Llangollen Canal across the River Dee in the Vale of Llangollen in northeast Wales.
Pontcysyllte Aqueduct
The aqueduct viewed from the valley below
Plaque commemorating the construction of the Pontcysyllte Aqueduct between 1795 and 1805 by Thomas Telford
Thomas Telford designed and built the Pontcysyllte aqueduct using the experience he gained from building Longdon-on-Tern Aqueduct on the Shrewsbury Canal
Navigable aqueducts are bridge structures that carry navigable waterway canals over other rivers, valleys, railways or roads. They are primarily distinguished by their size, carrying a larger cross-section of water than most water-supply aqueducts. Roman aqueducts were used to transport water and were created in Ancient Rome. The 662-metre (2,172 ft) long steel Briare aqueduct carrying the Canal latéral à la Loire over the River Loire was built in 1896. It was ranked as the longest navigable aqueduct in the world for more than a century, until the Magdeburg Water Bridge in Germany took the title in the early 21st century.
Narrowboat crossing the World Heritage Pontcysyllte Aqueduct in Wales
Out-of-use cast-iron Longdon-on-Tern Aqueduct
The Magdeburg Water Bridge seen from the shores of the Elbe
Passenger (packet) boat on the Monocacy Aqueduct of the Chesapeake and Ohio Canal