The module has a ditching element (1) that is arranged in a ditch or watercourse, where water from the ditch or water course flows into the ditching element. A covering element (2) closes an upper part of the ditching element for forming a road and/or footpath on the watercourse. The covering element comprises permeable a lateral raised part (10) and a lateral draining part (11) that protect users of the road and/or footpath. The ditching element is provided with a filtration device formed of filtering tissues. An independent claim is also included for a method for construction of a road or footpath on a watercourse.
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