505.17—Applicability of Title 23, U.S. Code.
Funds made available to carry out this section shall be available for obligation in the same manner as if such funds were apportioned under chapter 1 of title 23, United States Code; except that such funds shall not be transferable to other agencies and shall remain available until expended and the Federal share of the cost of a Project of National and Regional Significance shall be as provided in section 505.13.