(a) When a new highway is constructed across a railroad, such highway shall pass over or under the railroad as the Commissioner of Transportation directs. The company operating such railroad shall construct such crossing to the approval of the commissioner and may take land for the purposes of this section. The expense of such crossing construction shall be borne by either the town, city or borough constructing such highway, or by the company constructing the same, or by a sharing of the cost between the town, city or borough and the company, as the commissioner directs.

(b) On or after October 1, 1989, no public railroad crossing at grade shall be constructed unless authorized by special act of the General Assembly. The Commissioner of Transportation, upon the request of the joint standing committee on transportation or upon his own initiative, shall investigate and make recommendations concerning the creation of such a crossing. Such investigation shall include a public hearing on the creation of such a crossing. The commissioner shall provide reasonable notice to the town, city or borough where such crossing is to be located, any railroad utilizing the rail line and the party requesting the crossing and to the public through publication of notice in a newspaper having general circulation in the municipality where such crossing is to be located. Any proposed legislation for the creation of such a crossing shall be accompanied by a detailed report containing, but not limited to the following information: The date of the public hearing, any requirements for the protection of persons using the crossing, including but not limited to the protections established in sections 13b-342 to 13b-345a, inclusive, and a recommendation concerning the party to bear the costs of construction, installation and maintenance of such crossing.