At Llandecwyn, on the Porthmadog to Dovey Junction line, the railway runs alongside the road, after crossing over the Afon Dwyryd at the Pont Briwet bridge. This is the close up roadside view of 158846, as it rounds the curve on 6 August 2002 with the 2G35 09:42 Pwllheli to Machynlleth Wales & Borders service.