The Croesor Tramway (also known as the Croesor Railway) was a 2ft gauge tramway built to connect the slate quarries on the western flanks of Moelwyn Mawr with Porthmadog harbour. The tramway opened to traffic in 1864 (possibly partially opened earlier) and survived until the 1930s, by which time regular traffic over the line had ceased.
The lower part of the line became part of the Welsh Highland Railway in the 1920s, this part was reopened as part of the rebuilt WHR in 2011.
Early history 1862-1878
The tramway was built on wayleaves to the order of Hugh Beaver Roberts, a solicitor of Llanrwst. The exact date that work started on the tramway is not recorded, but in December 1862, the North Wales Chronicle reported:
"The Croesor Slate Quarry, which is situate on the south-west side of the celebrated Moelwyn Mountain, has been pretty fairly developed but the extreme difficulty of removing the slates to the Port for exportation has hitherto operated as a very serious drawback. In order to obviate this difficulty, it was resolved sometime ago to make a tramway to Portmadoc harbour, past Ynysfawr and along the flat ground of Traeth Mawr, so as to join the inner harbour by Ynystowyn and Mr. Spooner, the civil engineer, was directed to survey the line, and to supply the required plans and sections. This having been done to the satisfaction of the Company, it was resolved to carry out the design and we are glad to say that last week the undertaking was fairly commenced, at the end next the quarry"
By April 1863 good progress was being made with the construction of the tramway trackbed and a large delivery of rails arrived ready for track laying. It is likely that the tramway was operating later in 1863. By 1865, the tramway was in full operation and a takeover by the putative Beddgelert and Portmadoc Railway was already being proposed. Beaver Roberts incorporated the Croesor & Portmadoc Railway Company by an Act of Parliament of 5 July 1865, with a registered office in Caernarfon.  This Act also provided powers to build a branch from Ynysfawr towards Beddgelert to serve the various mines that had opened around the village. This proposed branch was not built, although the Welsh Highland Railway did eventually construct the route from Ynysfawr to Beddgelert.
The 1872 Parliamentary Act that set up the North Wales Narrow Gauge Railways, included proposed running rights over the Croesor and Portmadoc Railway. The proposed NWNGR line would have formed a junction with the Croesor Tramway near Garreg Hylldrem - near or at the point where the WHR would eventually meet the Croesor.
The Croesor was connected to the Festiniog Railway at Porthmadog harbour, where it joined the fan of lines to the slate wharves. Likely from the earliest days, Festiniog Railway wagons traversed the Croesor. Certainly by 1873 the practice had been formalised, with the Festiniog charging the quarries along Cwm Croesor a tonnage fee for use of their wagons on the tramway.
Takeover plans 1879-1921
By the mid 1870s, the tramway company was in financial trouble and had to borrow money to keep operating. Matters became serious enough that the company's debenture holders appointed a receiver. In 1879, under a new act of parliament, the owning comapny became the Portmadoc, Croesor and Beddgelert Tram Railway Company. The new Croesor Railway Act authorised "extending the line to Llanfrothen" but again this extension was not built. This was the first of a complex series of proposed and actual takeovers, leading up to the formation of the Welsh Highland Railway. The major shareholders of this new company were Hugh Beaver Roberts and James C. Russell a Director of the North Wales Narrow Gauge Railways.
In 1882, another Bill was put before Parliament by the Porthmadog solicitors of Breese, Jones and Casson to again extend the Croesor Railway, and again this came to nothing.
In 1898, the backers of the Beddgelert Light Railway sought to acquire the Croesor Railway as a first step towards their goal of a narrow gauge railway from Porthmadog to Beddgelert and on to Rhyd Ddu.
In 1903 the Portmadoc, Croesor and Beddgelert Tram Railway Company was purchased by the North Wales Power and Traction Co. Ltd for £10,000 as part of their Portmadoc, Beddgelert and South Snowdon Railway (PBSSR) scheme. Although the PBSSR scheme didn't come to anything the Croesor Tramway continued to operate.
The Welsh Highland Railway
The PBSSR works were later completed as the Welsh Highland Railway.
With construction of the Welsh Highland Railway in 1922, the bulk of the route was taken over and re-laid in 45lb/yd rail as far as Croesor Junction (the section beyond, to the limit of the statutory railway near the A4085 crossing at Carreg Hylldrem (= Ugly View Rock), was not included in the 1922 contract with Sir Robert McAlpine & Sons and was thus not up-graded). Eastwards from here, the original 1860s light T-rail remained until lifted by Will Scrap (W.O. Williams, Harlech) in 1948-9.
The connection with the new 1922-3 main line became known as Croesor Junction. Though there is no actual closure date for the rest of the route, most was out of use by the cessation of WHR operations in 1937. Unofficial usage apparently continued until the 1950s.
Scrapping and remains
The rails remained in place until 1948-9 when the lower section was lifted by Will Scrap (as part of the dismantling of the WHR), the upper section succumbing during the 1950s or even 1960s. It is reported that some early reclamation of items was undertaken by Festiniog revivalists - three solid-sided wagons from Tre Saethan became ash waggons at Boston Lodge and were later passed to Rheilffordd Llyn Tegid at Llanuwchllyn. Some of the T-rail was removed by WHR (1964) Co. and moved to Beddgelert Station, where it was never used. (During the 2006 rebuild, this was stolen)
The route of the tramway is still clear to see throughout most of its length and the final three miles at the south western end of the line are now restored as part of the Welsh Highland Railway project. The route can be seen on this Map link
The seaward end of the Croesor Tramway was at Portmadoc, home of the more famous FR Co., with whose lines it connected around the harbour, a triangle in the High Street remaining until 1927. The tramway ran in a north easterly direction into the Croesor valley, initially along the Creassy Embankment, for a distance of about 5 miles where it served by inclines a number of slate quarries along the southern side of the valley - Upper and Lower Parc, Fron Boeth (= warm breast[of a hill]), Croesor (=?Crossing) and Rhosydd (= Moors). Fron Boeth had a tunnel through Moelwyn to the sunny slope of the hill, hence the name. Croesor has an impressive incline - that at Rhosydd looks actively evil, with several slate waggons on the hillside where they fell off the incline. This incline was in use until 1952 to take fuel to the pumps at Rhosydd Quarry.
For a more illustrated description of the sections not being rebuilt in connection with the Welsh Highland, see the official WHR site here (external site).
- The Dismantling of the Welsh Highland Railway
- Associated Railways, Gauge, Narrow
- Day Log/1865-07-05
- Day Log/1879-07-21
- Day Log/1892-06-20
- Day Log/1901-08-17
- Groups And Organisations
- "Beddgelert Light Railway". The North Wales Express. 30 September 1898.
- "Portmadoc". The North Wales Chronicle and Advertiser for the Principality. 6 December 1862.
- "The Trade of the Port". The North Wales Chronicle and Advertiser for the Principality. 4 April 1863.
- "Beddgelert and Portmadoc Railway". The North Wales Chronicle and Advertiser for the Principality. 25 February 1865.
- Oxley, John Steward (1901). Light Railways: Procedure, Reports and Precedents. 1. Jordan & Sons Ltd.
- "In Parliament". The Cambrian News and Merionethshire Standard. 24 November 1871.
- "Important Rating Appeal". The North Wales Chronicle and Advertiser for the Principality. 12 July 1873.
- "News". The Cambrian News and Merionethshire Standard. 1 August 1879.
- "The Proposed Beddgelert Railway". The North Wales Express. 6 May 1898.
- Johnson, Peter (2002). An Illustrated History of the Welsh Highland Railway. Hersham: Oxford Publishing Co. ISBN 0-860935-65-5. OCLC 59498388.
- "Contract between Sir Robert McAlpine & Sons and Welsh Highland Railway (Light Railway) Co for construction of the Welsh Highland Railway : 30 April 1922". Rail Chronology. Retrieved 14 October 2018.