The Subway sandwich chain’s outpost at 51 Murray is closed; a sign on the door directs customers to “our nearest location” at Church and Chambers. It’s part of what appears to be a larger die-off: The Subway shop at 137 Hudson closed in January; the one at 510 Broome also closed sometime around then; and the one at 297 Church (between Walker and White) has a “for rent” sign in the window.