When a highway is laid out after the laying out and constructing of a railroad, so as to cross such railroad, the highway may pass over, under or cross the railroad, and shall be so built as not to obstruct or injure it. In case the highway is laid out to cross the railroad at grade, on application of the parties owning or operating the railroad, the Board, upon notice and hearing, shall determine whether such crossing ought to be at grade. If the Board determines that the crossing ought not to be at grade, it shall be constructed over or under the railroad. (Amended 1959, No. 329 (Adj. Sess.), § 39(b), eff. March 1, 1961; 1995, No. 60, § 32, eff. April 25, 1995.)