; and (ii) may not carry out the project until Congress authorizes the construction of the project. (C) Demolition Demolition of a temporary structure under this section shall be subject to the cost-share requirement under paragraph (3), but the costs of that demolition shall not be included in the total construction cost of the project under subparagraphs (A) and (B). (3) Cost-share (A) In general The non-Federal share of the cost of carrying out a project under this section shall be not more than 35 percent. (B) Small or disadvantaged communities In the case of a project carried out under this section in an impacted community that is a small or disadvantaged community, the Federal share of the cost of a project may be up to 100 percent, based on the ability of the community to pay.