The unfortunate timing of government financial approval is a major and recurring element in the history of Metrolink. It's why the ex-NR line past Oldham is about to be closed after most of it has been open as Metrolink for only 19 months (and part of it at the east end, including the A62 crossing, for only 13 months). It's why lots of money was spent on advance works in several places, including demolishing blocks of flats, for lines that then weren't built for almost a decade.
And it's why Outwood Lane, near the airport, is about to be dug up [by NR] for bridgeworks underneath for the fourth time in 25 years when the third time [by Metrolink] has only recently been finished.