If federal funds are not available or used for payment of direct financial assistance to persons displaced by the acquisition of property by the Department of Transportation or counties, the department or boards of county commissioners or county highway boards may provide direct financial assistance to such persons. Financial assistance authorized by this section may not exceed the total amount that would have been payable under § 31-19-49 if federal funds had been available or used.
SDCL 31-19-49.1