May 7, 2019

Otter Ledge in Somerset

After an ecological survey in Radstock, Somerset, Linden Homes asked Landmarc to design & install a ledge to provide safe passage for the otters through a culvert beneath the road. Otters often prefer running along the river bank rather than swimming all the time, so this will provide a safe alternative route, avoiding traffic on the busy road. The shelf had to be installed above the level of high water so it was available at all times, and run the entire 55-meter length of the culvert.

In our Dart Fabrication workshop, we fabricated a galvanised steel frame with support brackets that were bolted to the side of the culvert. The shelf itself was aluminium chequer plate with hinged access ramps at either end. Due to the depth of the water in the culvert, we had to come up with an access solution for installation. Instead of dewatering the whole culvert, we used our tracked dumper fitted with a crane to lower our small workboat into the watercourse from which our operatives could fit the steelwork. Now the otters have room to shelter and can avoid the busy road.