 The roadway construction should finish for an opening on May 15, 2014.The MacArthur Causeway, which currently has three traffic lanes in each direction and a sidewalk on the eastbound side, will be widened to four wide traffic lanes with a ten-foot inner and outer shoulder, as well as a six-foot sidewalk.The tunnel was officially opened to commercial and private traffic on August 3, 2014, after minor mechanical delays pushed back the originally scheduled June 2014 opening date.