Notwithstanding any other provision of the general statutes, the Commissioner of Transportation, on the application in writing of the selectmen of any town, the mayor and common council of any city or the warden and burgesses of any borough or on his own motion, may make all necessary orders regarding the relocation of an existing grade crossing where it can be shown that the crossing at the revised location will be in the interests of public safety, necessity and convenience due to improved highway alignment, gradient, sight distance or such other reason as will result in better traffic operations at the crossing, provided the state, town, city or borough making such application shall bear the cost of such relocation and the maintenance thereafter shall be borne in the same manner as prior to such relocation.