The state department of conservation is hereby authorized and directed to convey to the board of county road commissioners of Mackinac county an easement over the unpatented lake bottom lands between Hill's island and island number 8 in the Les Cheneaux islands in Mackinac county for the purpose of a bridge connecting Hill's island and island number 8.

     Before the conveyance authorized by this act is made, the board of county road commissioners of Mackinac county shall file with the department of conservation evidence of its acceptance of the bridge and roads connecting thereto as a part of the public road system and shall submit plans and specifications relative to the structure. The department of conservation may make such recommended changes in the plans and specifications as are necessary to protect the public interest in the public navigable waters.