All state lands over which a right-of-way of any railroad to be hereafter constructed, shall be located, shall be appraised in the same manner as in the case of applications for the purchase of state lands, fixing the appraised value per acre for each lot or block, quarter section or subdivision thereof, less the improvements, if any, and the damages to any state lands affected by such right-of-way, shall be appraised in like manner, and the appraisement shall be recorded and the evidence or report upon which the same is based shall be preserved of record, in the office of the department, and the department shall send notice to the railroad company applying for the right-of-way that such appraisement has been made.