Funds accrued and payable to cities under ORS § 366.785 to 366.820 shall be remitted on a monthly basis within 35 days after the end of the month for which a distribution is made by the Department of Transportation to the financial officer of each city. The funds appropriated shall be apportioned on or before the last day of each month by the department, which shall certify to the apportionment. Upon such certification, warrants shall be drawn payable to the cities in the amounts set out. [Amended by 1967 c.454 § 44; 1973 c.436 § 1; 1975 c.527 § 3]