Conn. Gen. Stat. § 16-276: Submission of map to authority.

Any such company, as soon as it has definitely established a route, but in any event not less than ninety days before the commencement of actual construction or installation, shall submit to the Public Utilities Regulatory Authority and to the governing body of each town through which it is proposed that such route shall pass, for their information, a map approved as to form by the authority, clearly setting forth the proposed route to be followed.