The East River bridges allot vehicles 30 lanes to drive in or out of Manhattan, at no charge. That number is set to shrink by two, to 28, if Mayor de Blasio and his successor follow through on Thursday’s announced conversions of one lane of traffic on the Brooklyn and Queensboro bridges. Right on cue, though, one loud car guy cried foul. Queens Assembly member David Weprin complained to the New York Times, “There are still plenty of people who drive into Manhattan as well as small businesses who rely on those bridges. [Traffic congestion on the bridges] certainly will be an issue once th...