A487 road

Last updated

UK road A487.svg
A487
A487 road map.png
A487 Road - geograph.org.uk - 243423.jpg
Between Machynlleth and Dolgellau with Cadair Idris in view
Route information
Maintained by South Wales Trunk Road Agent and North & Mid Wales Trunk Road Agent
Length174 mi [1]  (280 km)
Major junctions
South end Haverfordwest
51°47′33″N4°58′44″W / 51.7926°N 4.9789°W / 51.7926; -4.9789
Major intersectionsUK road A4076.svg A4076
UK road A40.svg A40
UK road A478.svg A478
UK road A484.svg A484
A486
UK road A482.svg A482
UK road A485.svg A485
UK road A4120.svg A4120
UK road A44.svg A44
UK road A4159.svg A4159
UK road A489.svg A489
UK road A493.svg A493
UK road A470.svg A470
UK road A494.svg A494
UK road A493.svg A493
UK road A496.svg A496
UK road A4212.svg A4212
UK road A496.svg A496
UK road A4085.svg A4085
UK road A498.svg A498
UK road A499.svg A499
UK road A4085.svg A4085
UK road A4086.svg A4086
UK road A4087.svg A4087
UK road A55.svg A55
A5
North end Bangor
53°13′07″N4°09′36″W / 53.2187°N 4.1601°W / 53.2187; -4.1601
Location
Country United Kingdom
Primary
destinations
Fishguard
Cardigan
Aberystwyth
Machynlleth
Porthmadog
Caernarfon
Road network

The A487, officially the Fishguard to Bangor Trunk Road, is a trunk road in Wales that follows the coast from Haverfordwest, Pembrokeshire, in the south, to Bangor, Gwynedd, in the north.

Contents

Route

The road starts at a junction with the A40 in Haverfordwest and travels northwest to St David's to switch northeast 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 heavy goods vehicles (HGVs). From 2010, articulated HGVs were diverted from the section between Cardigan and Fishguard because of this, and routed instead via the A478 road to Penblewin, then the A40 to Fishguard via Haverfordwest. However, there were still problems to some extent. [2]

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 where it meets the Menai Suspension Bridge near Bangor.

History

The section of road in the Dulas valley between the River 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 narrow-gauge Corris Railway followed the same route.

The site of Dolgellau railway station, along with approximately 1.5 mi (2.4 km) of trackbed of the Ruabon–Barmouth line, was used to construct the Dolgellau bypass in the late 1970s.

In 1989–90, Cardigan was bypassed south of the town with a new Priory Bridge over the River Teifi and a short 3-lane section between the bridge and the junction with the A478.

A bypass was opened in 1994 avoiding Y Felinheli on the section between Caernarfon and Bangor.

Between Penrhyndeudraeth and Porthmadog, the road passed over a mile-long embankment, known as The Cob. Until 2003, drivers had to pay a charge to cross The Cob. [3] 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. [4] 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 original route over The Cob was renumbered as the A4971. The Porthmadog bypass was officially opened on 17 October 2011. [5]

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 mi (16 km) 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. [6]

The preferred route for the £100m Caernarfon-Bontnewydd bypass had been announced; Caernarfon from the northern end of the Pen-y-groes bypass to the western end of the Y Felinheli bypass. [7] This bypass was under construction in 2021 and opened 19 February 2022.

In 2018, Pembrokeshire County Council proposed to build a bypass to the east of Newgale which would replace the road section which was flooded during the 2013–14 United Kingdom winter floods. [8]

See also

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References

  1. "Directions to Treborth Rd/A487". Google Maps. Retrieved 14 April 2013.
  2. "Lower Town, Fishguard, still blighted by lorry chaos". Western Telegraph. 27 June 2010. Retrieved 10 October 2020.
  3. Assembly abolishes toll on Porthmadog Cob Archived 30 March 2012 at the Wayback Machine at Welsh Government website, 28 March 2003. Retrieved 2012-10-21.
  4. Welsh Assembly Government : A487 Porthmadog, Minffordd and Tremadog Bypass [ permanent dead link ]
  5. £35m Porthmadog bypass officially opens – seven weeks early, WalesOnline, 17 October 2011
  6. "Road closure for new aerial bat crossing". BBC News. 30 January 2010. Retrieved 5 June 2011.
  7. Williams, Gareth (5 July 2012). "'Purple route' for £100m Caernarfon bypass". Trinity Mirror North West & North Wales Limited. Retrieved 12 February 2016.
  8. "Newgale A487: £30m new route for storm-ravaged road". BBC. 25 September 2018. Retrieved 26 September 2018.