Woburn had four sidings to provide shunting space for trains reversing when travelling to or from the workshops, but why a triangle was never built between the two lines has never been fully explained (Hoy).

[1] Woburn was initially an interchange for bus and rail services, but in 1986 the Hutt Valley Transport Study decided that Waterloo was a more logical choice.

Waterloo was closer to centres of residential and commercial interest, had sufficient room for bus platforms to be installed, and was not burdened with other operational requirements such as Woburn being the junction with the Gracefield Branch, with its loops and sidings.

The new interchange facility at Waterloo was opened on 26 November 1988 and fully integrated with all the new public transport routes and timetables by the following March.

The rebuilt station also added a covered waiting area, which had previously been boarded up and unable to be used for several years.