Vt. Stat. Ann. tit. 5, § 3790

Notwithstanding the provisions of this chapter allocating certain costs to the State or permitting the Transportation Board to make such allocations, no claim for reimbursement of the State’s share of any work may be asserted against the State unless the Secretary of Transportation, prior to commencement of the work for which reimbursement is sought, certified in writing that appropriated funds were available to pay the State’s share.