East Lancashire Railway/Metrolink

[lejog]

IIRC it was disconnected at the Metrolink end during the building of the bridge over the Calder Valley line, when the level of the Metrolink line was raised above the old alignment by the new embankment leading to the bridge. It doesn't look to be a trivial job to reconnect.

Google Earth

 

[snowball]

The cab video in #19 proves that the link had already been severed by the time the Metrolink line opened, confirming lejog's remark, and also shows the difference in levels.