Complex sentence: On January 11,2013, the mayor's office announced the bridge would reopen for pedestrian traffic by 2014, but in August 2014, it was announced that the bridge would not open until the spring of 2015.
Split into simpler sentences: On January 11,2013, the mayor's office announced the bridge would reopen for pedestrian traffic by 2014. In August 2014 it was announced that the Bridge would not open until the Spring of 2015.