Construction of a roadway or other accessway, utility right-of-way, communication lines, power lines, and pipelines across a wetland may be permitted by the Planning Board if, after receiving comments from the Conservation Commission, the Planning Board determines that:
(1) The proposed construction is essential to the productive use of land or water outside the wetland; and
(2) No reasonable alternative to the proposed construction exists which does not cross or alter a wetland, or which has less detrimental impact on a wetland.