A487 road
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| Major junctions | |
| North end: | Merlin's Bridge |
 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 A4086 road A4087 road A55 road A5 road |
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| South end: | Bangor |
| Location | |
| Primary destinations: |
Haverfordwest Fishguard Cardigan Aberystwyth Machynlleth Porthmadog Caernarfon |
| Road network | |
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.
It starts at Merlin's Bridge near Haverfordwest, from where it travels north west to St David's, then switches back north east through Fishguard, Cardigan, Aberaeron, Aberystwyth, Machynlleth and Corris.
When passing through the town of Fishguard, the road width through the town and especially Lower Fishguard is a very narrow only single lane road leading to many traffic issues especially with HGVs. Articulated HGVs have been recently banned from this section between Fishguard and Dinas Cross because of the difficulties of HGVs passing other traffic on this section.
There was a by-pass built around the town of Cardigan during 1989/90 which consists of a new concrete bridge of the River Teifi followed by a 3 lane road up the hill to the north of the town.
The section of road in the Dulas valley between the Afon Dyfi near Machynlleth and Corris was 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 Dolgellau multiplexing with the A470 north of the Cross Foxes inn. The site of Dolgellau railway station along with approximately a mile and a half of trackbed of the former Great Western Railway line 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 Trawsfynydd then passing through Penrhyndeudraeth and Porthmadog.
Between Penrhyndeudraeth and Porthmadog, the road passes over a mile-long embankment, known as "The Cob". Until 2003, drivers had to pay a charge to cross The Cob.[1] In 2008 the Welsh Assembly Government published plans for the Porthmadog, Minffordd and Tremadog bypass, which would reduce the amount of through traffic in the town.[2] Work started on the project in 2010, the route of which passes under the Ffestiniog Railway, and then crosses over the Welsh Highland Railway.
The section between Porthmadog and Llanwnda has been improved. The new section bypasses Llanllyfni and 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 bat bridge was built over the Groeslon bypass in 2010 to guide lesser horseshoe bats across the road.[3]
A bypass was opened in 1994 avoiding Y Felinheli on the section between Caernarfon and Bangor. It is proposed to build a further bypass to avoid Caernarfon (from the northern end of the Pen-y-groes bypass to the western end of the Y Felinheli bypass) thereafter.
The road terminates at the foot of the Menai Suspension Bridge near Bangor.
[edit] References
- ^ [1]
- ^ Welsh Assembly Government : A487 Porthmadog, Minffordd and Tremadog Bypass
- ^ "Road closure for new aerial bat crossing". BBC News. 30 January 2010. http://news.bbc.co.uk/1/hi/wales/north_west/8487932.stm. Retrieved 5 June 2011.
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