Trivia: Railway Infrastructure (e.g. buildings) that was built but never used

[gg1]

OLE masts were put in place quite a way from Didcot to Oxford before the electrification scheme was cancelled (hopefully only temporarily). Similarly, all the preparation work was completed through Box tunnel and in Sydney Gardens (Bath) before that scheme was cancelled (again, hopefully only temporarily).

Similarly masts and gantries were installed at Swansea Maliphant depot.

 

[billio]

This article in he Manchester Evening News reminds one of the failed Picc-Vic underground line.
Under the Arndale Centre in Manchester.

 

[John Luxton]

This morning I used Moorfields Station in Liverpool. Now whilst of course it is fully used its design was intended to link in with scrapped plans for the Liverpool City Council "pavements in the sky" scheme of walkways above the traffic. Various bits of this system were built in the 1970s but virtually all have now been removed as it was decided around the time the station was completed that the walkways scheme was to be scrapped.

Yet Moorfields retains its somewhat bizarre design of a booking hall at first floor level, with a much longer than needed bank of 3 escalators providing a link to Merseyrail Wirral and Northern Line platforms. So whilst not an unused line or station the design is certainly a bizarre example of railway infrastructure which isn't being used as intended.