prior to the 2018 election, the state labor government decided to build in 2016–2017 a $160 million tunnel for the o-bahn busway from north of north terrace, hackney, through the adelaide park lands to the corner of grenfell street and east terrace on the eastern edge of the adelaide city centre. as part of this work, the middle of the entire length of hackney road, hackney, from the river torrens to north terrace was rebuilt to provide buslanes and an entrance to / exit from the tunnel. the cost/benefit ratio of this project was questioned, traffic disruption was considerable, and the labor party did not win the 2018 election.