Three business owners at the corner of Lafayette and Bleecker Streets say that construction on a new subway passage is warding off customers, leading to their revenue plummeting by as much as 50 percent. Workers for the Metropolitan Transit Authority have been busy since 2009, building a passageway between the uptown 6 train at Bleecker Street and the Broadway-Lafayette station. Unfortunately for the businesses at the entrance to the downtown 6 train, the latest phase of work, which according to an M.T.A. spokesman started four weeks ago, requires a construction zone that occupies parking spaces in the area and forms a barrier in front of the three store entrances. Read more…