sentences:  The main proponent of the scheme was Hertfordshire County Council but it failed to win the support of Transport for London (TfL) which owns the Watford branch.The engineering works would have consisted of the realignment of the disused Watford and Rickmansworth Railway's line between and , with the construction of a viaduct over the Grand Union Canal, River Gade and A412 road and two new stations before branching into the London Overground line near and continuing to .The proposed route was featured in a Transport for London network map for 2016 and the Transport for London Indicative 2025 Transport Map on which Watford tube station does not appear.