Hi Robert, I think on the various mapping programs on the web, the Long Island Expressway (LIE) is shown as 495 and made to look like it runs right into Manhattan by virtue of the Midtown Tunnel. The Midtown Tunnel comes into Manhattan in Murray Hill so that's probably the source of everyone's confusion.
That aside, I've recently sold several listings in Murray Hill in fact one just closed near the Midtown Tunnel (or 495) and one thing about the neighborhood that could explain your question is the large number of large buildings (therefore a lot of apartments in each building and some for sale in every one, nothing unusual). One reason people are drawn to MH is the convenience to many neighborhoods (for instance you can walk to work if you work in midtown and its a very quick hop to other destinations like Union Square, Greenwich Village, etc), the apartments in these 1960's buildings that populate the area are generally large, and the prices have tended to be reasonable compared to other areas of lower Manhattan. It really is a great place to look if you've been considering buying in the city and I'd be more than happy to share more about the neighborhood and explain more of the inside story on what's available there if you'd like to give me a call at 917-376-1648 or email me at firstname.lastname@example.org. Thanks much! Charlie Summers, VP, Bellmarc Realty