Depends on the group, but generally the owner of the land that the drug is on needs to be involved in its creation. So, for a sidewalk, the local government.
See this article that states that the path of a Houston eruv was leased from the city for 50 years for $1.
Wouldn't the natural thing to do be to bury it? That's what we do with other important wires. Hanging it off old telephone poles seems like a recipe for recurring disaster.
Does it need to be a metal wire? Or is, say, a plastic pipe enough? In the spirit of the other comments here, there are plenty of those already in place. Certainly with the involvement of the land owner, which in these cases probably are the city or the state.
It would be interesting to hear from someone who are involved in these traditions to hear their view.
In fact, an entire tractate of the Talmud, called “Eruvin,” is focused on discussing these topics. Most subjects regarding Eruvin are fraught with differing opinions of Jewish Law, and therefore it is of utmost importance that questions related to the Eruv should be discussed with a Posek (Jewish Legal Expert.
There's a bunch of info on that site. I just watched the video on "How to Make a Home Made Shabbos Belt", which is a hack to meet some rules about carrying keys on Saturdays.
I'm not Jewish, nor have I studied Jewish law/rules, but I don't think those could be justified as being sufficiently continuous. It's more of a network of various stations connected by discrete cables, rather than one big ring of fiber.
OK, so the Jews have gotten their NYC situation under control. But what about all the vulnerable populations in SF, LA, etc.? We must group-fund an eruv for those vulnerable populations.
Also, this is a lost opportunity for ambulance-chasing lawsuits. Anyone know if anyone's been killed by their city being surrounded with fishing line suspended 30 feet in the air?
