A48 road

The A48 is a major trunk road in Great Britain. It runs from the A40 at Highnam, 3 miles (4.8 km) west of Gloucester, to the A40 at Carmarthen. Before the Severn Bridge opened on 8 September 1966, it was the principal route between South Wales and South West England. For most of its journey through South Wales, it runs almost parallel to the M4 motorway. During times of high winds at the Severn Bridge, the A48 is used as part of the diversion route and is still marked as a Holiday Route.

From Gloucester, the A48 runs through the villages of Minsterworth, Westbury-on-Severn, connects to a link road to Cinderford in the Forest of Dean then through Newnham, Blakeney and since 1995, bypassing Lydney on the west bank of the River Severn. It crosses the England–Wales border at Chepstow and continues westwards close to the South Wales coast passing Newport, Cardiff, Cowbridge, Bridgend, Pyle, Port Talbot, Neath and Swansea, before terminating at the junction with the A40 near the centre of Carmarthen.

There is a motorway section (the A48(M)) which is a spur from the M4 running from junction 29 on the west side of Newport. The A48(M) has no junction options at either end; it leads into limited-access junctions. Near the east of Cardiff, at St Mellons, it ends by flowing onto the A48 (Eastern Avenue) and through Cardiff. It is 2 miles (3.2 km) long and is a 2-lane motorway throughout its length. At St Mellons it runs continuously into a further 6 miles (9.7 km) of the dual-carriageway A48, which also features (albeit narrow) hard shoulders.[1] The original A48 continues to link Newport and Cardiff.

UK road A48

A48 road map
A48 Eastern Avenue, Cardiff
The A48 (Eastern Avenue, in Cardiff near the University Hospital of Wales)
Route information
Part of Tabliczka E30.svg
Maintained by English local authorities and South Wales Trunk Road Agency
Major junctions

M4 J24
M4 J28
A48(M) J29A
M4 J38
M4 J41
M4 J44
M4 J49

Port Talbot
Road network

Highnam to Newport

The A48 from Highnam to Newport runs adjacent to the River Severn. After running through a series of villages, it crosses the England–Wales border at Chepstow. From the M4 Motorway at J15 near Swindon, traffic is directed for Wales if it is over the Severn Bridge weight limit of 44 tonnes. Traffic is directed onto the A419, then onto the A417 after Cirencester, and at Gloucester, onto the A40. This road has some speed cameras, as there have previously been incidents here, and have been erected to prevent them happening again. During busy periods, such as the Severn Bore, this road may become busy with parked cars near the river's edge. Apart from morning and evening rush hours the road is generally quite empty and free running, with no heavy traffic reports. The road also runs next to the Forest of Dean. The woods may be viewed from the roadside, as may the hills of the Dean. There is a level crossing in Lydney. Until Chepstow, there is a height limit under the low railway bridges. Tall vehicles are directed to Newport on the A40. For some parts of this route, short distance dual carriageways occur, especially on steep hills.

At Chepstow, the road links Gloucestershire with Monmouthshire. The road runs through Chepstow. There is access to the Forest of Dean in Chepstow. At the end of the road in Chepstow (at the roundabout), the Primary Route ends here, and it meets the A466, a road that provides access to the Wye Valley and to the M48 motorway, originally the M4. Access to the M4 is available on this road. The A48 becomes a secondary route here, and continues bypassing Caldicot, Caerwent and Langstone.

The A48 then continues to M4 junction 24, where vehicles exceeding the height limit may rejoin the A48. The A449 provides access to Usk and the A40 near Raglan. When the Severn Bridge is closed in bad weather conditions, the traffic is directed onto the A449. After this roundabout, the road follows through to Newport. There are some minor routes that take you to Newport City Centre, but the main route is the A4042, leading directly to Newport city centre and Caerleon. This is after the Newport International Sports Village [1], a sports village with facilities including a Swimming Pool, Tennis Courts, Football Stadium, Cricket Pitch, Velodrome and many more facilities. Passing through Newport, there are views of the industrial town, with views of historic features such as the Transporter Bridge. The road then reaches the M4 again, at J28.

History of the road number

The original (1923) route of the A48 was Worcester to Carmarthen via Malvern, Ledbury, Ross-on-Wye, Monmouth, Newport, Cardiff, Bridgend, Neath and Llanelli. In 1935 it was rerouted east of Newport, replacing the A437 between Newport and Gloucester. The road from Worcester to Newport became part of the A449, apart from the section between Ross and Monmouth (which became part of the A40).

Road safety

In June 2008, the 27-mile (43 km) Gloucester – Chepstow stretch of the A48 was named as the most dangerous road in South West England. This single carriageway had 45 fatal and serious injury collisions between 2004 and 2006, and was rated as medium risk in the EuroRAP report published by the Road Safety Foundation.[2]


  1. ^ Pathetic Motorways - A48(M)
  2. ^ Dr Joanne Hill (July 2008). "Getting ahead" (PDF). Road Safety Foundation. p. 13. Retrieved 21 September 2013.

Coordinates: 51°27′36″N 3°22′21″W / 51.45989°N 3.37263°W

A4069 road

The A4069 is an A road which connects Llandovery with Gwaun-Cae-Gurwen in Wales, UK.

The route begins at the junction with the A474 at the north of Gwaun-Cae-Gurwen, and travels through Lower Brynamman and Brynamman. The route then crosses over the Black Mountain range of the Brecon Beacons and emerges near Felindre near Llangadog. It crosses through Llangadog and then continues northeast until the junction with the A40 at Llandovery. It reaches a height of 493 m (1,617 ft) above sea level.

A474 road

The A474 is a suburban main route in south Wales.

Settlements served by the A474 include:

Briton Ferry


Neath Abbey



Fforest Goch











Aberthin is a small village, just outside Cowbridge in the Vale of Glamorgan, South Wales, on the north side of a shallow valley, less than a mile northeast of Cowbridge across the A48 road. Cowbridge Comprehensive School lies just to the southwest of the village. About 250 metres to the south is an old quarry, with a "faulted strip of grey oolite". Aberthin is also the name of a brook, the River Aberthin. The village was served by the Aberthin Platform railway station between 1905 and 1920, now a field to the west of Aberthin.

B4265 road

The B4265 road (often known as the Barry-Llantwit road) is a main road in the Vale of Glamorgan, southeastern Wales, running in a northwesterly direction along near the coast. It links Cardiff Airport to Bridgend, lasting for 15.9 miles (25.6 km). The road begins at the roundabout near the airport and the village of Penmark at 51°24′21″N 3°20′39″W as a continuation of the A4226 road leading from Barry. Passing the junction turnoff to Gileston and St Athan, at Llantwit Major, the B4270 road branches off to the northwest to Llandow Industrial Estate. The road then moves progressively in northwesterly direction until St Brides Major, where the B4524 road to the south connects it to Southerndown and Ogmore-by-Sea. At St Brides Major, the road shifts to a northerly direction, where it passes Ewenny and Ogmore village leading to Bridgend, where it joins the A48 road and finally A473 road (Cowbridge Road) at 51°30′7″N 3°34′34″W.

10 February 2014, road work began to straighten the road to allow better access to St Athan and Cardiff Airport Enterprise Zone.

Baglan Bay

Baglan Bay (Welsh: Bae Baglan) is a part of the Swansea Bay coastline and a district of Neath Port Talbot county borough, Wales. Baglan Bay is also the name of a local government community. Baglan Bay is served by the M4 Motorway and the A48 road which traverse the northeastern edge of the area.


Cefneithin (Welsh pronunciation) is a village in Carmarthenshire, Wales, in the Carmarthenshire coalfield area. It lies just off the A48 road, 7 miles north west of Ammanford and 9 miles north of Llanelli. The Gwendraeth Fawr river flows nearby. It has a hairdresser, a village hall and primary and secondary schools.

The village is notable as the birthplace of two of the greatest names in Welsh rugby union, Carwyn James, Barry John both of whom played for Cefneithin RFC.

Cefneithin was the birthplace of Ronnie Williams, of Ryan and Ronnie fame.


Coedarhydyglyn or Coedriglan, formerly Old Coedarhydyglyn (meaning 'the wood along the glen'), is a private Grade I listed neo-classical regency villa and estate on the western rim of Cardiff, less than half a mile from Culverhouse Cross, southeast Wales. It is accessed via the A48 road between Cardiff and St. Nicholas at the top of "The Tumble" hill leading up from Culverhouse Cross and Coedarhydyglyn Lane which leads to Drope to the north. The estate lies between the villages of St Georges-super-Ely (to the northwest) and Downs (to the south) just inside the boundary of the Vale of Glamorgan.

Crick, Monmouthshire

Crick (Welsh: Crug) is a small village or hamlet in the Welsh county of Monmouthshire, United Kingdom. It is located on the A48 road 1 mile north of the town of Caldicot and 1 mile east of Caerwent.

Downs, Vale of Glamorgan

Downs is a hamlet in the Vale of Glamorgan near the county border with the City of Cardiff. It lies just off the A48 road along a road called Grant's Field, just west of Culverhouse Cross and just south of the historical estate of Coedarhydyglyn. The village of St. Nicholas, Vale of Glamorgan lies to the west. The Traherne Arms lies along the main road near the village and, being near the top of The Tumble hill above Culverhouse Cross, has panoramic views of the Welsh capital of Cardiff.


Gabalfa (English: , Welsh pronunciation: [ɡaˈbalva]) is a district and community in the north of the city of Cardiff, capital of Wales. It is characterised by a four-lane fly over road at the Gabalfa Interchange, where the A48 road meets the A470 road (North Road) which leads from Cardiff to northern Wales, and the A469 road (Caerphilly Road). The area is also the site of the All Nations Centre.

The name is derived from the Welsh 'Ceubalfa', which is literally translated as 'place of the boat'. It was formerly the site of a ferry crossing across the River Taff, upon which a school is now built.The area around St. Joseph's Church near to Companies' House is known as 'the Colonies' due to the number of street names after former British colonies, such as Australia Road, Newfoundland Road and many more.


Gwern-y-Steeple is a hamlet in the Vale of Glamorgan, Wales. It lies north of the A48 road and north-westSt. Nicholas (to which it is linked by Chapel Lane) on the road south-west of Peterston-Super-Ely. Cottrell Park Golf Club lies to the south. Gwern-y-Steeple is part of the village of Peterston-Super-Ely and lies within the catchment area of both Peterson-Super-Ely Church in Wales Primary School and Pendoylan Primary School. The local member of Parliament is Conservative Alun Cairns and is part of the Vale of Glamorgan county council. The local county councillor is Rhodri Traherne.

The village of St. Nicholas once extended as far north as Gwern-y-Steeple, with Croes-y-Parc Chapel, originally being within the St. Nicholas boundary.


Hendy (Welsh: Yr Hendy, originally a farm name meaning "the old house" cognate with 'hendre' the main home) is a village in the community of Llanedi, Carmarthenshire, Wales, situated on the border between Carmarthenshire and Swansea. It lies on the Afon Gwili just across the River Loughor from the town of Pontarddulais and, together with Fforest to its north, forms part of a continuous built up area centred on Pontarddulais. Most of the village sits between the M4 Motorway junction 48 and the A48 road (Fforest Road) north of the motorway.


Llansamlet is a suburban district and community of Swansea, Wales, falling into the Llansamlet ward. The area is centered on the A48 road (named Samlet Road and Clase Road in the area) and the M4 motorway.

Similar to many other places in Wales where the name begins with Llan, Llansamlet is named after a saint – Saint Samlet. There is a Saint Samlet's Church in the area on Church Road.

Lydney Junction railway station

Lydney Junction railway station is a railway station near Lydney in Gloucestershire. The station is now the southern terminus of the Dean Forest Railway. It is located to the south of Lydney, near the A48 road.

The diesel department of the preserved line uses Lydney Junction as a base of operations.


Pwllmeyric (Welsh: Pwllmeurig) is a small village in Monmouthshire, Wales, located 1 mile south west of Chepstow, on the A48 road within the parish of Mathern. The name Pwllmeyric means, in Welsh, "Meurig's pool" and refers to the pwll or creek of the Severn estuary which, before it silted up, linked the village to the sea. It was named for Meurig ap Tewdrig, king of the early Welsh kingdoms of Gwent and Glywysing in the 5th or 6th century, who buried his father Tewdrig (St. Theodoric) at Mathern.The village is the presumed birthplace of Wales international footballer Eddie Parris, and the childhood home of rock musician Grant Nicholas. It is the location of Chepstow garden centre and a pub, the New Inn.


Pyle (Welsh: Y Pîl) is a village and community (and electoral ward) in Bridgend county borough, Wales. This large village is served by the A48 road, and lies less than one mile from Junction 37 of the M4 motorway, and is therefore only a half-hour journey from the capital city of Wales, Cardiff; in fact it lies approximately equidistant between the capital (Cardiff) and the second city (Swansea). The nearest town is the seaside resort of Porthcawl. Within the Community, to the northeast of Pyle, is the adjoining settlement of Kenfig Hill.

Swansea District line

The Swansea District line is a section of railway line running through the northern part of Swansea, and is primarily used for freight transportation, although minimal passenger services also traverse the route. It was built by the Great Western Railway in 1912 to provide a faster and less steeply graded route between London and Fishguard, in connection with the recently opened harbour at the latter place. It can thereby claim to be the very last mainline railway to have been built in Wales. The double track line runs from Cwrt Sart junction at Briton Ferry on the South Wales Main Line to Morlais junction near Pontarddulais on the Heart of Wales line.


Taibach or Tai-bach (English: Little Houses) is a suburban district, community, (and electoral ward) of Port Talbot, Wales. It is a settlement centered on the main A48 road, sandwiched between the river Ffrwdwyllt and Margam.

Wyedean School

Wyedean School and Sixth Form Centre is a secondary school with academy status in Sedbury, Gloucestershire, England, just across the border from Chepstow, Wales. Wyedean School was rated 'Good' again by OfSTED in Jan 2018. The school is close to the A48 road and less than a mile from the Welsh border and as such, it accepts pupils from across the border.

Wyedean School is a mixed comprehensive school, with 1,100 pupils, including 300 in the Sixth Form. It was first set up in 1973 and was then moved in 1976 to its present location.

The school is located in Gloucestershire, and falls within the English, not Welsh, education system. Although the majority of its pupils live in the Forest of Dean area of England, a significant number travel from within Wales.

It was also the school of J.K. Rowling, author of the Harry Potter series.

A roads in Zone 4 of the Great Britain road numbering scheme
Wales Trunk Roads in Wales
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North and Mid Wales
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Managed by the
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Trunk Road Agent
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