Misplaced Pages

A48(M)
Route information
Maintained by South Wales Trunk Road Agent
Length	2.0 mi (3.2 km)
Existed	1977–present
Major junctions
Northeast end	Castleton, Newport
Major intersections	J29 → M4 motorway
Southwest end	St Mellons, Cardiff
Location
Country	United Kingdom
Counties	Newport, Cardiff
Primary destinations	Cardiff
Road network
Roads in the United Kingdom Motorways A and B road zones
← A38(M) → A57(M)

The A48(M) motorway in Wales links Cardiff with Newport. It is a 2-mile-long (3 km) spur of the M4 motorway. At St Mellons, it runs continuously into the dual-carriageway A48, which also has (albeit narrow) hard shoulders. The A48(M) has no other junctions and opened in 1977. The M4 was extended west from junction 29 in 1980.

Junctions

This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. Please consult this guideline for information on how to create one. Please improve this article if you can. (December 2021)

Previous A48(M) motorways

The 6-mile (9.7 km) Port Talbot bypass which opened in 1966, was numbered A48(M) before its incorporation into the westward extension of the M4 in the 1970s. Some maps show the Morriston bypass section of the M4 as also having been originally numbered A48(M), although whether this number was ever used on the ground has been questioned.

References

1. ^ "M4 in Wales". The Motorway Archive. Archived from the original on 14 March 2007.
2. "A48(M)". Roads. Retrieved 31 August 2020.

v t e Motorways in the United Kingdom
Great Britain	M1 M11 M18 M180 M181 A1(M) A167(M) A194(M) A1077(M) M2 M20 M23 M25 M26 M27 M271 M275 M3 M32 A3(M) A38(M) A308(M) A329(M) M4 M40 M42 M45 M48 M49 A48(M) A404(M) M5 M50 M53 M54 M55 M56 M57 M58 A57(M) A58(M) M6 M6 Toll M60 M61 M62 M65 M66 M67 M69 M602 M606 M621 A64(M) A66(M) A627(M) M73 M74 M77 A74(M) M8 M80 M876 M898 A8(M) A823(M) M9 M90
Northern Ireland	M1 M2 M3 M5 M12 M22 A8(M)
Former	M10 M41 M63 M85 A18(M) A40(M) A41(M) A102(M) A601(M) A6144(M)
Unbuilt	M12 M15 M16 M31 M64 M4 relief road
Junctions ( Category)	Almondsbury Broxden Catthorpe Charing Cross, Glasgow Denton Island Handy Cross Longbridge Lydiate Ash Scotch Corner Spaghetti Junction Switch Island Thorney Thorpe Thurcroft
Bridges	Auchenshuggle Avonmouth Bromford Don Friarton Gathurst Kingston Medway to Nowhere Ouse Rakewood Scammonden Prince of Wales Severn Thames Thelwall Tinsley Queensferry Usk Weaver
Related articles	National Highways Traffic officers South Wales Trunk Road Agent Traffic officers Transport Scotland DfI Roads Preston By-pass Smart motorway Motorway service area List
Category Commons

v t e Transport in Newport
Road	M4 motorway European route E30 A48(M) motorway New M4 (cancelled) A48 road A449 road A468 road A4042 road
Bus	Newport bus station Cwmbran bus station Newport Bus National Express Stagecoach South Wales Cardiff Bus Fflecsi (TfW)
Railway lines	South Wales Metro (proposed) South Wales Main Line Welsh Marches line Gloucester–Newport line Ebbw Valley Railway
Railway stations	Newport Pye Corner Rogerstone Proposed: Caerleon Llanwern Magor & Undy Newport West Newport West Central Somerton
Cycling	NCR 88 NCR 4 NCR 46 NCR 47
Walking	Wales Coast Path Usk Valley Walk Cistercian Way
Waterways	River Usk Monmouthshire and Brecon Canal Fourteen Locks
Sea	Newport Docks
Transporter bridge	Newport Transporter Bridge
Transport portal Wales portal

v t e Transport in Cardiff
Motorways and A roads	M4 motorway European route E30 A48(M) motorway A48 road A470 road A469 road A4054 road A4119 road A4160 road A4161 road A4232 road
Pedestrian precincts and commercial streets	Bute Street Caroline Street Cathedral Road City Road Cowbridge Road East Cowbridge Road West St Mary Street & High Street Lloyd George Avenue Newport Road West Grove Womanby Street
Bus	Bus transport in Cardiff Trolleybuses Cardiff Bus Baycar Capital City Green Capital City Red Free b Iff card Cardiff Central bus station (demolished) Cardiff Bus Interchange Fflecsi First Cymru Adventure Travel Stagecoach South Wales
Cycling	Cycling in Cardiff Taff Trail Lôn Las Cymru Ely Valley Trail NCR 88 Pont y Werin
Railway lines	Rail transport in Cardiff South Wales Main Line Valley lines ■ Butetown branch ■ City Line ■ Coryton Line ■ Maesteg Line ■ Merthyr line ■ Rhondda line ■ Rhymney line ■ Vale of Glamorgan Line
Railway operators	CrossCountry Great Western Railway Transport for Wales
Major railway stations	Cardiff Central Cardiff Queen Street
Other city railway stations	Birchgrove Cardiff Bay Cathays Coryton Danescourt Fairwater Grangetown Heath High Level Heath Low Level Lisvane & Thornhill Llandaf Llanishen Ninian Park Radyr Rhiwbina Ty Glas Waun-gron Park Whitchurch List of railway stations in Cardiff
Air	Cardiff Airport Cardiff Heliport
Water	Cardiff Bay Barrage Cardiff Waterbus River Taff River Ely Tiger Bay
Proposed transport network	South Wales Metro Proposed South Wales Metro stations in Cardiff Butetown Cardiff Parkway Crwys Road Gabalfa

• Motorways in Wales
• Transport in Newport, Wales
• Transport in Cardiff