I,
“Rav Moshe’s shitos are definitely mechudosh. The Mishkenos Yaakov clearly does not say that the criterion of shishim ribo is dependent on a city ”
Agreed, as I stated earlier:
However, he specifically states that it is not conditional or depending on any city population – any road that is “open” or leads to 600k will suffice, (that means even a small town with any road leading to any major highway is a Rh”R). ”
My point was that the concept that 600k does not have to traverse through etc is mentioned by the MY. But he absolutely does not mention any such condition of 600k dependent on a ‘city’.
There are basically two shitos on how to determine 600k, according to the Mishkenos Yaakov;
A) its either any road that leads to 600k, no matter the size of the town (as per Ritvah and his opinion in rashi) B) or, all 600k need to traverse through one road etc. (As per shitas Tur and Shulchan Aruch in Rashi) .