Section 69. The committee may close temporarily any street vested in it or any part thereof for the purpose of r

69. The committee may close temporarily any street vested in it or any part thereof for the purpose of repairs, or for the purpose of constructing or repairing any sewer, drain, culvert or bridge, or for any other public purpose; and may divert, discontinue or permanently close any such street, and sell the land or such part thereof as is not required for the purposes of this Act.