Complex sentence: In the future, a new transitway extension will be done to connect more southerly areas of Barrhaven which will be completed in the upcoming years with the creation of the Strandherd and Marketplace Stations.
Split into simpler sentences: In the future, a new transitway extension will be done to connect the southern sections of Barrhaven. It will be completed during the upcoming years with the creation of Strandherd and Marketplace Stations.