A487

A487
Between Machynlleth and Dolgellau with Cadair Idris in view
Route information
Maintained by South Wales Trunk Road Agency and North & Mid Wales Trunk Road Agency
Length:	174 mi (280 km)
Major junctions
South end:	Haverfordwest 51°47′33″N 4°58′44″W / 51.7926°N 4.9789°W / 51.7926; -4.9789
	A4076 road A40 road A478 road A484 road A486 road A482 road A485 road A4120 road A44 road A4159 road A489 road A493 road A470 road A494 road A493 road A496 road A4212 road A496 road A4085 road A498 road A499 road A4085 road A4971 road A4086 road A4087 road A55 road A5 road
North end:	Bangor 53°13′07″N 4°09′36″W / 53.2187°N 4.1601°W / 53.2187; -4.1601
Location
Primary destinations:	Fishguard Cardigan Aberystwyth Machynlleth Porthmadog Caernarfon
Road network
Roads in the United Kingdom Motorways A and B road zones

The A487, officially also known as the Fishguard to Bangor Trunk Road, is a trunk road in Wales, running up the western side of the country from Haverfordwest in the south to Bangor in the north.

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. As of 2010^[update], 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.