   the a487 is a trunk road in wales, running up the western side of the country from haverfordwest in the south to bangor in the north. ==route== the road starts at a junction with the a40 in haverfordwest, from where it travels north-west to st david's, then switches north-east through fishguard, cardigan, aberaeron, aberystwyth, machynlleth and corris. through the town of fishguard, the road width in places is a very narrow single lane, leading to many traffic issues, especially with hgvs. , articulated hgvs have been banned from a section between fishguard and dinas cross because of this. the road continues to dolgellau multiplexing with the a470 north of the cross foxes inn. after dolgellau, the road continues to multiplex with the a470, re-emerging just north of trawsfynydd then passing through penrhyndeudraeth and porthmadog. the road terminates at the foot of the menai suspension bridge near bangor. ==history== the section of road in the dulas valley between the [[river dyfi|afon dyfi]
Roads_in_Gwynedd Roads_in_Pembrokeshire Roads_in_Wales Transport_in_Pembrokeshire