Oregon Revised Statutes Public Lands § 271.160

No street shall be vacated upon the petition of any person when it is proposed to replat or rededicate all or part of any street in lieu of the original unless such petition is accompanied by a plat showing the proposed manner of replatting or rededicating. If the proposed manner of replatting or rededicating or any modification thereof which may subsequently be made meets with the approval of the city governing body, it shall require a suitable guarantee to be given for the carrying out of such replatting or rededication or may make any vacation conditional or to take effect only upon the consummation of such replatting or rededication.