Metrolink plans could create "Northern Circular" Date published: 02 February 2021 Andy Burnham and Sean Fielding on a site visit to the Oldham King Street tram stop Jan 2020 A plan to connect the Bury Metrolink line to the Oldham and Rochdale line via Middleton - the so-called ‘Northern Circular’ - has moved a step closer with the publication of a five-year transport delivery plan by Greater Manchester Combined Authority (GMCA) The document sets out potential investments in the region’s transport infrastructure including bus corridor upgrades, station and interchange enhancements, new Metrolink lines and new tram-trains which run on both the Metrolink network and heavy rail lines.