1958—Pub. L. 85–740 substituted $108,570,000 for $88,570,000 in opening par., and, in cl. (7), increased from $20,000,000 to $40,000,000 the amount authorized for roads and trails, of which not less than $20,000,000 shall be available for contract authority to bring routes 1 and 3 on the Navajo and Hopi Indian reservations up to secondary road standards in the State.

Pub. L. 85–740 provided in part that the contract authority and appropriations authorized by the amendment to clause (7) of this section shall be in addition to sums apportioned to Indian reservations or to the State of Arizona under the Federal Highway Act, as amended and supplemented.