The trip is to facilitate Gertrude's outward journey to the Warley Model Railway Exhibition at Birmingham's NEC. WHR Ltd director Richard Harrison was at the helm, as the loco was towed by F&WHR diesel Criccieth Castle, driven by F&WHR General Manager Paul Lewin.
Road haulage contractors had expressed concern about how easily a low loader might access Pen y Mount following alterations to the end of Pen y Mount Lane from the new Porthmadog bypass roundabout and rather than risk delays and inconvenience when time was short, WHHR Chairman Martyn Owen asked the F&WHR for assistance. A low loader will collect Gertrude from the Ffestiniog Railway's Minffordd Yard on Wednesday.
Gertrude's return may be via Pen y Mount Lane when time is not so tight, and highway engineers will be on hand to observe events.
Earlier this year, Gertrude assisted WHHR resident loco Gelert in a series of braking trials on the newly-reopened Welsh Highland Railway.