70 S T A T. ]
PUBLIC LAW 627-JUNE 29, 1966
379
shall be apportioned immediately upon enactment of this Act. The additional sums herein authorized for the fiscal years ending June 30, 1958, and June 30, 1959, shall be apportioned on a date not less than six months and not more than twelve months in advance of the beginning of the fiscal year for which authorized. (d) APPORTIONMENTS FOR SUBSEQUENT YEARS BASED U P O N REVISED ESTIMATES OF COST.—All sums authorized by this section to be appro-
priated for the fiscal years 1960 through 1969, inclusive, shall be apportioned among the several States in the ratio which the estimated cost of completing the Interstate System in each State, as determined and approved in the manner provided in this subsection, bears to the sum of the estimated cost of completing the Interstate System in all of the States. Each apportionment herein authorized for the fiscal years 1960 through 1969, inclusive, shall be made on a date as far in advance of the beginning of the fiscal year for which authorized as practicable but in no case more than eighteen months prior to the beginning of the fiscal year for which authorized. As soon as the standards provided for in subsection (i) have been adopted, the Secretary of Commerce, in cooperation with the State highway departments, shall make a detailed estimate of the cost of completing the Interstate System as then designated, after taking into account all previous apportionments made under this section, based upon such standards and in accordance with rules and regulations adopted by him and applied uniformly to all of the States. The Secretary.sti'ma'teTo^^c^nof Commerce shall transmit such estimate to the Senate and the House grass. of Representatives within ten days subsequent to January 2, 1958. Upon approval of such estimate by the Congress by concurrent resolution, the Secretary of Commerce shall use such approved estimate in making apportionments for the fiscal years ending June 30, 1960, June 30, 1961, and June 30, 1962. The Secretary of Commerce shall make a revised estimate of the cost of completing the then designated Interstate System, after taking into account all previous apportionments made under this section, in the same manner as stated above, and transmit the same to the Senate and the House of Representatives within ten days subsequent to January 2, 1962. Upon approval of such estimate by the Congress by concurrent resolution, the Secretary of Commerce shall use such approved estimate in making apportionments for the fiscal years ending June 30, 1963, June 30, 1964, June 30, 1965, and June 30, 1966. The Secretary of Commerce shall make a revised estimate of the cost of completing the then designated Interstate System, after taking into account all previous apportionments made under this section, in the same manner as stated above, and transmit the same to the Senate and the House of Representatives within ten days subsequent to January 2, 1966, and annually thereafter through and including January 2, 1968. Upon approval of any such estimate by the Congress by concurrent resolution, the Secretary of Commerce shall use such approved estimate in making apportionments for the fiscal year which begins next following the fiscal year in which such report is transmitted to the Senate and the House of Representatives. Whenever the Secretary of Commerce, pursuant to this subsection, requests and receives estimates of cost from the State highway departments, he shall furnish copies of such estimates at the same time to the Senate and the House of Representatives. (e) FEDERAL SHARE.—The Federal share payable on account of any project on the Interstate System provided for by funds made available under the provisions of this section shall be increased to 90 per centum of the total cost thereof, plus a percentage of the remaining 10 per centum of such cost in any State containing unappropriated and un-
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