Notes: Port Dinorwic 1st station was located on the Menai Bridge – Afon Wen line which opened in stages between 1852 and 1871. The station was originally part of the Bangor & Carnarvon Railway (B&CR) which was incorporated on 20 May 1851 to build a line from the Chester and Holyhead Railway (C&HR) at Menai Bridge to Caernarfon (‘Carnarvon’ at that time). The single-track railway opened to Port Dinorwic for goods on 1 March 1852 and for passengers on 10 March 1852. Services were extended to Carnarvon for passengers on 1 July 1852 and for goods services on 10 August 1852.

From January 1871 passenger services were extended southwards from Carnarvon to Afon Wen and Llanberis using a new section of line through Carnarvon that was the last link in the creation of the through route. In 1871 authorisation was given for the doubling of the original B&CR, and work was complete by 1872. In 1874 Port Dinorwic 1st station closed and was replaced with a new station 200yd to the south. The new facility was better located, being closer to the centre of the village. The first station was demolished.

Route map by Alan Young.

Sources:

• Bangor to Portmadoc including the Llanberis lines – V Mitchell & K Smith – Middlewood Press 2010
• Bradshaws Rail Times December 1895 - Middlewood Press 2011
• Bradshaws Rail Times July 1922 - Guild Publishing 1986
  
• British Railways (London Midland Region) Timetable 23rd May to 25th Sept 1949
• British Railways (London Midland Region) Timetable 17th of Sept 1956 to 16th of June 1957
• From Chester to Holyhead: The Branch Lines – B Rear - OPC 2003
• LMS Time Table July 18th to September 11th 1932
• Railway Passenger Stations in Great Britain a Chronology - M Quick - Railway and Canal Historical Society 2009

To see the other stations on the Menai Bridge - Afonwen line click on the station name: Menai Bridge, Treborth, Port Dinorwic (2nd), Griffiths Crossing, Caernarvon, Carnarvon Pant, Dinas, Llanwnda, Groeslon, Penygroes, Pant Glass, Brynkir, Ynys, Llangybi, Chwilog & Afon Wen