The Rabbonim responsible for the neighborhood
The Crown Heights Beis Din and the Practical Ruling on Carrying
The Crown Heights Beis Din has repeatedly ruled that the publicized eruv may not be relied upon. Carrying in the neighborhood streets is forbidden on Shabbos and Yom Kippur.
No eruv may be relied upon
The Beis Din's first public ruling on the proposed eruv states that it is absolutely forbidden to carry in the streets of Crown Heights and that the advertised structure is treated as though it does not exist. A second ruling states that there is no halachically valid eruv anywhere within the neighborhood's boundaries.
Later notices repeated the same instruction. They expressly include Yom Kippur, ordinary carrying through the streets, and attempts to have a child or non-Jew carry where halacha does not permit it.
One continuing position
The psak belongs to a long-standing Crown Heights practice. Rabbi Zalman Shimon Dworkin is cited in the later local ruling together with the leading American and Canadian Rabbonim who opposed reliance on large-city eruvin. Rabbis Avrohom Osdoba, Aharon Yaakov Schwei, Yosef Yeshaya Braun, and Shlomo Yehuda Halevi Segal addressed the present Crown Heights proposal in signed rulings and official Beis Din guidance.
The names on the documents vary because the rulings were issued at different times. The practical instruction does not: Crown Heights has no eruv that may be relied upon, and carrying remains prohibited.