Construction is continuing to progress on 126 East 57th Street, a 28-story residential tower on Billionaires’ Row in Midtown East, Manhattan. Designed by ODA Architecture and developed by MRR Development under the MRR 1326 LLC, the 346-foot-tall structure will yield 147 condominium units with an average scope of 1,156 square feet, as well as 5,000 square…