In 1936, in response to still-persistent overcrowding, the Boston Transit Department constructed a new northbound side platform under Tremont Street with entrances at Temple Street. The project also added a sub-passage connecting the streetcar platforms and a passage connecting the new platform with the Cambridge Tunnel fare lobby opposite Park Street, but did not open the Winter Street Concourse. The new platform moved the streetcar boarding area southbound for the second time. A new lighting system was also installed. The project, funded by the Works Progress Administration, cost $407,000 (equivalent to $ in ). Work began on January 8, 1936, and the new platform was opened on December 5.