Photo looking northernly along 4th Avenue, courtesy Designing the 21st Century Street. Transportation Alternatives [T.A.] has issued an open call for new designs for the heavily-trafficked intersection of 4th Avenue and 9th Street in Brooklyn, at the western edge of Park Slope. Called “Designing the 21st Century Street,” the competition is wholly theoretical and not part of any actual city plan, but the winning prizes are very real, ranging from $2,000 to $6,000. According to......