Conn. Gen. Stat. § 13b-279
When the Commissioner of Transportation, upon an application brought under the provisions of section 13b-270, finds that any highway crosses or is crossed by the tracks of more than one railroad, and the tracks of such railroads are so near together that public convenience requires the work of separating the grades to be done under and in compliance with one order, he shall give notice to all the companies operating such railroads to appear before him and be heard upon the application. After such notice and hearing, said commissioner shall determine what alterations shall be made, if any, so as to separate the grades of all of such crossings at the same time and shall determine by whom such work shall be done, and he shall apportion the expense to be borne by the railroad companies among such companies in such manner as he deems equitable.
Conn. Gen. Stat. § 13b-279
(1949 Rev., S. 5492; P.A. 75-486, S. 1, 69; P.A. 77-614, S. 571, 587, 610; P.A. 78-303, S. 85, 136.)