Va. Code § 56-31
Upon failure of the company desiring to make any crossing pursuant to § 56-23 to receive notice of suspension of the work on such crossing by the Commission within sixty days after submission of the plans, specifications and descriptions as required by § 56-27, or upon the approval or modification of plans, specifications and descriptions by the Commission, or, if an appeal be taken as aforesaid, upon the approval or modification by the Supreme Court of the plans, specifications and descriptions prescribed by the Commission and the payment of the proper compensation to the state or county for damages to the state or county property, or to the owner or occupant of lands, such damage to be ascertained according to the laws regulating the exercise of eminent domain, work may be commenced immediately.
Va. Code § 56-31