Section 3571 - State highways(a) When a railroad corporation has constructed a railroad across a State highway by passing upon the traveled path thereof, the corporation shall keep in good and sufficient repair, and rebuild when necessary, culverts, crossings, and other constructions except bridges made for the accommodation, safety, and convenience of the public travel on the highway upon the railroad.(b) Installation of new crossings at grade, extensions of existing crossings, or the rebuilding of existing crossings required as a result of the building of said extensions, when required for the accommodation, safety, and convenience of the public travel, or for any reason except the accommodation of the railroad, shall be done by the railroad corporation at State expense.