As part of his overall plan for the square, Ruggles received permission on January 28, 1833 from the Board of Alderman to open up Fourth Avenue, which had been limited to use by trains, to vehicular traffic. He also brought about the creation by the state legislature of Lexington Avenue and Irving Place, two new north-south roads laid out between Third and Fourth Avenues and feeding into his development at the top and bottom of the park. The new streets reduced the number of lots around the park from 66 to 60.