111. The installation of a removable structure whose supports are located outside the upper limit of a bank is allowed all year long. However, that type of structure must not be in contact with the watercourse.
From 15 December to 31 March, the following types of removable structures may also be installed:
(1) a structure composed of 1 or more conduits at least 600 mm in diameter installed on the bed of a watercourse and whose fill is constituted of tree trunks or snow and covered if needed with a geotextile membrane and granular materials;
(2) a structure composed of compacted snow or frozen water, covered if needed by a geotextile membrane and granular materials, in particular where there is a risk of carrying sediments into the watercourse;
(3) an ice bridge, that is a structure composed only of frozen water and reinforced if needed by log mats that are interconnected.
Any type of removable structure other than those described in the second paragraph is prohibited from 15 December to 31 March.
Where a removable structure is installed from 15 December to 31 March, the banks must be stabilized over the whole width of the trail regardless of the type of removable structure installed. The removable structure installed must be appropriate for the crossing site in order to minimize the disruptions of the bed of the watercourse when it is used and removed.
473-2017O.C. 473-2017, s. 111.