Ind. Code § 8-4-12-1
Any railroad company organized under a special charter, or under the general law of the state for the construction of railroads, whose lines are wholly within this state or partly within this state and partly in another state, which shall fail to keep up the directory of their road and expend at least the sum of fifty thousand dollars ($50,000) upon the line of their road in this state, within any period of two (2) years from March 11, 1867; or where any railroad company, so organized as aforesaid, shall have located before March 11, 1867, the line of her road in this state, and have afterwards adopted another and different line and route thereof in this state, then, in either of the above cases, such railroad company shall be taken and held to have abandoned such road, or so much of the line thereof in this state as has been abandoned by so selecting and adopting another and different line; and such company is hereby declared to have forfeited all her rights, privileges, and franchises in such road or part thereof.
IC 8-4-12-1