The Railways Act,1989
Section 19. Over-bridges and under-bridges
(1) Where a railway administration has constructed lines of rails across a public road at the same level, the State Government or the local authority maintaining the road, may, at any time, in the interest of public safety, require the railway administration to take the road either under or over the railway by means of a bridge or arch with convenient ascents and descents and other convenient approaches, instead of crossing the road on the level, or to execute such other works as may, in the circumstances of the case, appear to the State Government or the local authority maintaining the road to be best adapted for removing or diminishing the danger arising from the level crossing.
(2) The railway administration may require the State Government or the local authority, as the case may be, as a condition of executing any work under sub-section (1), to undertake to pay the whole of the cost of the work and the expense of maintaining the work, to the railway administration or such proportion of the cost and expenses as the Central Government considers just and reasonable.
(3) In the case of any difference of opinion between the railway administration and the State Government or the local authority, as the case may be, over any of the matters mentioned in sub-section (1), it shall be referred to the Central Government, whose decision thereon shall be final.