Each town, city, borough, fire district or the Department of Transportation shall have the right to occupy and use for any purpose, without payment therefor, one gain upon each public utility pole or in each underground communications duct system installed by a public service company within the limits of any such town, city, borough or district. The location or relocation of any such gain shall be prescribed by the Public Utilities Regulatory Authority. Any such gain shall be reserved for use by the town, city, borough, fire district or the Department of Transportation.