- A487 road
UK road routebox
direction= North - South
Haverfordwest Fishguard cardigan Aberystwyth Machynlleth Porthmadog Caernarfon
junctions=ukroadsmall|4076The A487 is a major
roadin Wales, running up the west coast.
It starts in
Haverfordwest, from where it travels north west to St David's, then switches back north east through Fishguard, Cardigan, Aberaeron, Aberystwyth, Machynllethand Corris.
The section of road in the Dulas valley between the Afon Dyfi near
Machynllethand Corriswas built in the 1840s at the instigation of the local slate quarry owners to replace the old turnpike road on the opposite side of the valley. It may have utilised part of the formation of the Roman Sarn Helen. From 1859 the road was kept company on this section by the narrow-gauge Corris Railway.
The road continues to
Dolgellaumultiplexing with the A470 north of Cross Foxes, a pub closed in 2006. The site of Dolgellau railway stationalong with approximately a mile and a half of trackbed of the former Great Western Railwayline from Ruabon to Barmouth was used to construct the Dolgellau bypass in the late 1970s.
After Dolgellau, the road continues to multiplex with the
A470 road, re-emerging just north of Trawsfynyddthen passing through Penrhyndeudraethand Porthmadog.
Between Penrhyndeudraeth and Porthmadog, the road passes over a mile-long Cob. Until
2003, drivers had to pay a charge to cross The Cob.
The section between Porthmadog and Llanwnda has been improved. The new section bypasses
Llanllyfniand Penygroes, in parts utilizing the old trackbed of the Caernarfon to Afon Wen railway line. In April 2007, the 10 mile new section had to be resurfaced in its entirety after it became apparent that the wrong type of stone had been used for the surface tarmac.
A bypass was opened in
1994avoiding Y Felinhelion the section between Caernarfonand Bangor.
The road terminates at the foot of the
Menai Suspension Bridgenear Bangor.
It is propsed to bypass Porthmadog in 2009 and Caernarfon, from the northern end of the Pen-y-groes bypass to the western end of the Y Felinheli bypass thereafter.
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