Yesterday DOT tweeted this pic of the new bike connection on Jay Street, between Prospect and York streets.
This is a contraflow, parking-protected bike lane segment giving cyclists a safe, direct route out of DUMBO. (There's also a painted curbside bike lane heading into DUMBO.) It's a short connection that does a lot to improve the network, creating better access to the Manhattan Bridge, Downtown Brooklyn, and Fort Greene.
DOT went through a few design iterations before landing on this one. In an earlier version, the protected bike lane was bi-directional, but the agency pulled it after deciding downhill cyclists wouldn't be able to get a clear view of traffic approaching at York. The next version had no protection at all. This one gives protection to the cyclists who need it most, going uphill against car traffic.
Community Board 2 voted for the project in May. DOT says a new traffic signal will be installed at Jay and Prospect, beneath the bridge.