27. Notwithstanding section 26, the holder of a management permit who lays out and uses, during the freezing period, a winter road across a watercourse or a fish habitat may install bridging or lay out an ice bridge. Such bridging shall be seated on log mats installed above the natural high-water mark in order to prevent it from sinking into the ground, thus ensuring that it can be removed before the end of winter. In addition, the ground cover of the banks shall be preserved. If the bridging must be covered with unconsolidated or frost-susceptible material, the permit holder shall first cover it with a geotextile membrane.
At the end of the work, the permit holder shall remove the bridging in order to prevent sediments from being carried into the watercourse and shall leave the mats in place.
Where the permit holder lays out an ice bridge, he shall stabilize the banks with interconnected log mats installed across the full width of the roadway. At the end of the work, he shall leave the mats in place and in the spring shall remove any log frame that was used to reinforce the ice bridge.