Gates and Delasos in a Large City

A city eruv normally depends on halachic walls, natural boundaries, and openings formed as a tzuras hapesach. But once a street or area has the full status of a reshus harabim, the discussion changes. The ordinary form of an opening is no longer the whole answer. Chazal and the poskim discuss delasos, actual doors or gates at the openings of the public thoroughfare.

This is why old city gates appear so often in the halachos of reshus harabim. The question is not whether a city happens to have an entrance with a gatehouse. It is whether its public passage is halachically enclosed, what kind of doors stand at its openings, and whether those doors must actually be closed or only be capable of being closed.

Yerushalayim and the basic case of city gates

The Gemara in Eruvin gives Yerushalayim as the classic example. Rabbi Yochanan says that were it not for the fact that its doors were locked at night, one who carried in its public thoroughfares would be liable for carrying in a reshus harabim. Ulla makes a parallel statement about the entrances of Mechoza.

A wall around a city does not automatically turn every road inside it into an enclosed private domain. A major public road can run through the enclosure and out through its gates. The status of those gate openings therefore matters to the status of the road itself.

The Alter Rebbe states this explicitly when defining reshus harabim. Even where a city has a wall, he writes, a road running from gate to gate can retain all the laws of a reshus harabim when the gates face one another, the road has the required width, and the doors are not locked at night. The wall and the road must therefore be analyzed together. One cannot point to the wall while ignoring the openings through which the public way continues.

What delasos add

A deles is a real door or gate that can close an opening. It is a different halachic structure from a tzuras hapesach.

The Rambam discusses a public passage between two walls and rules that gates are made at its two ends. He then says that in his case the gates do not have to be locked at night, but they must be rauy linol, fit to be locked. If they are sunk into the earth so that they cannot close, the earth must be cleared and the gates repaired so that they can close. He concludes that a tzuras hapesach, a lechi, or a crossbeam does not suffice for the rectification of a reshus harabim.

The Alter Rebbe likewise distinguishes sharply between the two devices. He explains that a tzuras hapesach is a complete halachic partition on the Torah level, even if formed in the middle of a full reshus harabim. Nevertheless, when all the conditions of a full reshus harabim are present, Chazal did not permit carrying there through a tzuras hapesach alone. The required form of enclosure is by doors at the relevant ends.

That distinction is one reason a city eruv cannot be evaluated simply by asking whether there are poles and wires somewhere around its perimeter. The status of the streets comes first. If a true reshus harabim is present, the rules governing its openings are different.

Must the doors actually close at night?

The Gemara itself contains the roots of the two approaches.

In the statement about Yerushalayim, the doors are described as actually locked at night. Later in the same sugya, the Gemara discusses doors at Nehardea that were obstructed by earth. Rav Nachman ordered that the earth be cleared. The Gemara explains that in that case it was enough that the doors were capable of being locked, even if they were not actually locked.

The Rambam rules in his case that doors fit to close are sufficient. The Shulchan Aruch, however, records two opinions when speaking of a reshus harabim itself. The first requires the doors to be locked at night. The second says they need not actually be locked, provided they are fit to be locked.

The Alter Rebbe preserves both positions and gives a particularly important practical conclusion. After first stating the requirement of doors that are locked at night, he brings the opinion that doors fit to lock suffice, and then writes:

“One should be stringent like the first opinion, although the primary halacha follows the latter opinion.”

Thus ne'ilah, actual closing, and rauy linol, fitness to close, are not interchangeable expressions. They are two distinct standards discussed by the poskim. A careful city-eruv analysis has to state which standard is being used and why.

What does “fit to close” mean?

The Gemara and Rambam give a concrete test. If earth has accumulated around the doors so that they cannot be shut, they are not treated as fit to close until the obstruction is removed and the doors are put into working order.

That example shows that rauy linol is a real physical condition. A decorative gate, a remnant of an old barrier, or something that could not actually be brought across its opening cannot be called fit to close merely because it resembles a gate. The halachic question concerns an operative closure.

Later authorities discuss further details of what can prevent a gate from being considered practically closable, but the basic distinction is already clear in the Gemara: a door that is presently open can still be rauy linol; a door physically unable to close is not.

Rav Moshe and the stronger standard for an actual reshus harabim

This distinction became central in Rav Moshe Feinstein's discussion of Manhattan.

In Igros Moshe, Orach Chaim I:139, Rav Moshe analyzes the status of the bridges leaving Manhattan and the kind of enclosure that would be required if the passage there were itself a reshus harabim. In that discussion he writes that where the place is an actual reshus harabim, doors do not suffice unless they are actually locked at night. He treats the rule of doors that are merely fit to lock as applying, in his analysis there, where the passage does not itself have the full status of reshus harabim. He then examines the Rambam and the other Rishonim at length to explain the distinction.

Whatever conclusion is reached in a particular city, this makes the order of the questions important. One cannot begin with a gate and infer the status of the street from it. First the street and the public passage must be classified. Only then can the required form of enclosure be determined.

Why walled cities are not a shortcut

The familiar picture of an old walled city can make the issue seem simpler than it is. In fact, it illustrates why the openings require separate attention.

A solid wall can be a genuine mechitzah. But if the city's principal road passes straight through openings in that wall, those openings are part of the halachic picture. Yerushalayim and Mechoza are cited precisely in connection with their gates. The Alter Rebbe's formulation of a road running from gate to gate makes the same point in codified form.

The lesson is not that every walled city has a reshus harabim, nor that every city gate automatically removes one. The road, the walls, the openings, the width and direction of public passage, and the status of the doors all have to fit together. The other elements that define a reshus harabim remain separate questions.

Why toll barriers and bridge controls appear in the Manhattan discussion

Manhattan brought this old halachic question into a very different physical setting. Instead of a medieval wall pierced by city gates, Manhattan is surrounded largely by water, while roads leave the island through bridges and tunnels. Those bridge and tunnel approaches became natural places to ask what, if anything, closes the openings in the island's perimeter.

In 5714, in comments on a proposal concerning Manhattan, the Rebbe questioned an assertion that the area was unquestionably a Torah-level reshus harabim. He wrote that the point required “examination and clarification,” noting that the streets ultimately ended at bridges and tunnels where there were tzuras hapesach, mechitzos, or barriers used for collecting tolls and similar purposes. He then wrote that the different parts of Manhattan's perimeter had to be investigated.

That passage explains why toll gates and bridge controls appear in discussions that otherwise seem to be about the ancient laws of city doors. Toll collection has no special eruv status of its own. What matters is the physical fact that a public route crossing an otherwise bounded perimeter may pass through a controlled opening with an actual barrier or other enclosure feature. Such a feature then has to be measured against the halachic requirements for that opening.

The Rebbe's 5714 note does not itself declare every toll barrier a valid deles. Its language is deliberately investigative. The existence, construction, and operation of each boundary feature still have to be established, and its halachic effect still has to be determined. Rav Moshe's responsum likewise analyzes the bridge passages rather than treating the word “gate” as a conclusion.

The physical facts belong to the city being enclosed

The Manhattan discussion is useful because it shows what the halachic questions look like in a large modern city. It does not allow the physical advantages of one city to be transferred to another.

Water boundaries, bridge approaches, tunnel mouths, old toll controls, walls, and gates are facts about a particular perimeter. Crown Heights has to be examined on its own physical boundaries and its own streets. Where a proposed enclosure encounters a public thoroughfare, the question is not whether some other city once had gates. The question is whether the enclosure here contains the kind of walls, openings, and, where required, delasos that halacha demands.