Rohan Bridge

About

Rohan Bridge is a French built bridge crossing Elorn in the centre of Landerneau, Finistère, Brittany. It is one of the oldest of nineteen built bridges in Europe. Built in the 16th century at the bottom of the aber, which served as a port, it suffered the tide and separated fresh water from brackish water.

The sixty-seven metres that constitute a section of the rue du Pont connect to the north the wharf of Leon, and to the south the wharf of Cornwall. The bridge has five arches. A first arch connects the latter to a small island over a canal that serves as a weir and climbs up to the river bed after drawing an elbow. A bay closed by a pertuis separates this small island from an even smaller second located in the middle of the river and connected by a second arch almost invisible to the pedestrian. A dike consolidates the north shore of this second islet and extends downstream until after an invisible high tide erasure dam. From there, three arches crossed what constituted the Elorn's main arm downstream of another erasure dam.

History: A bridge, certainly made of wood, had crossed the last ford of the Elorn since at least 1336...