
Coming of the Railway
As elsewhere, the 19th century was a time of accelerating change in Pembrokeshire. One event which signalled the end of the sea-trading era was the coming of the railway to Haverfordwest.
In 1844 The South Wales Railway was formed. The idea was for the railway to service the industrial and population centres of South Wales and continue on into Pembrokeshire where a port for Ireland would be developed. Pembrokeshire was chosen as the line's terminus as its westerly location meant a much shorter sea crossing than from Swansea or Bristol. The terminus itself was originally to be Goodwick near Fishguard where the port would be built.

Construction began in Pembrokeshire in 1847 but in Ireland disaster had struck with the Irish Potatoe Famine of 1846 which left the Irish economy in ruins. The South Wales Railway was now in serious financial trouble having invested heavily in railways in Southern Ireland that were intended to link up with ferry services from Fishguard. Doubts about a port at Fishguard from an engineering point of view were also apparent when, in 1847, Brunel changed the planed location of his terminus and port to Abermawr, an isolated bay some four miles to the west. In 1848 work began on the line to Abermawr but this was soon halted when the directors stopped all work west of Swansea.
By 1849 there was a financial crisis in Britain as well as in Ireland and the struggling South Wales Railway no longer wanted a railway to Pembrokeshire at all. The shareholders (many with Irish interests) thought otherwise and the G. W. R. used its muscle as parent company and refused to accept a halt at Swansea. In June 1850 the railway was opened to Swansea and work then began again further west.

Work went on in Pembrokeshire throughout the early 1850s and in 1853 the line was open to Haverfordwest, and Pembrokeshire was at last on the railway map. From this year onwards bulky goods could be transported rapidly and cheaply overland. This lead to the decline of haulage by sea and the number of vessels using the port of Haverfordwest lowered considerably.

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