Authorizing the revision of lines and grades on a portion of City Plan No. 307 by relocating the curblines of Cuthbert Street, from Eighteenth Street to Nineteenth Street, thereby increasing the cartway width of said Cuthbert Street, and by re-grading Eighteenth Street, from John F. Kennedy Boulevard to Arch Street, and re-grading Cuthbert Street from Eighteenth Street to Nineteenth Street, thereby raising said Eighteenth Street and Cuthbert Street, under certain terms and conditions. — Open Common Ground