Grove Park Interchange

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Grove Park Interchange
Location Map ( geo)
The M4 Motorway River Usk crossing (3) - Geograph - 3340787.jpg
Cameraicon.png View gallery (5)
Location
Crindau / St Julians
County
Monmouthshire
Highway Authority
Welsh Government
Junction Type
Fork
Roads Joined
M4, A4042
Junctions related to the A4042
Caerleon Interchange • Court Farm Roundabout • Cwmbrân Roundabout • Edlogan Way Roundabout • Hardwick Gyratory • Pontypool Roundabout

Grove Park Interchange is junction 25A of the M4 in Newport, Monmouthshire. It came into being as a result of the Brynglas Tunnels and Malpas Road Relief scheme. As a result of that scheme, the primary A4042 was rerouted from Malpas Road onto a new alignment, partially following the old Monmouthshire Railway eastern valleys line. Where this route crosses the eastern mouth of the Brynglas Tunnels, a new roundabout was built (known as Grove Park Roundabout, along with sliproads connecting directly to the existing J25, which was then made limited-access. The intention was to prevent traffic from J25 travelling westbound through the tunnels, instead forcing them into a detour either to the north or south to gain access at J26 on the other side of Brynglas Hill.

Routes

Route To Notes

M4

Cardiff/Caerdydd access only from M4

M4

London, Chepstow/Cas-gwent

A4042

(M4 (W)/(Gn)), Cwmbran

A4042

Newport, Cardiff

A4042

Caerleon (B4596) spur to M4 J25



Grove Park Interchange
Related Pictures
View gallery (5)
Between two bridges - Geograph - 1439793.jpgJ25a for Newport and about to head into a very narrow and old tunnel - Coppermine - 4942.jpgM4 - Geograph - 1125133.jpgM4 - Geograph - 1125138.jpgThe M4 Motorway River Usk crossing (3) - Geograph - 3340787.jpg
Junctions on the M4
Main RouteChiswick • 2 Brentford • 3 Cranford Parkway • 4 Heathrow • 4B Colnbrook • 5 Langley • 6 Tuns Lane • 7 Huntercombe • 8/9 Holyport • 10 Winnersh • 11 Three Mile Cross • 12 Theale • 13 Chieveley • 14 Wickham • 15 Plough Hill • 16 Spittleborough • 17 Stanton St Quinton • 18 Tormarton • 19 Hambrook • 20 Almondsbury • 21 Awkley • 22 Pilning • 23 Rogiet • 23A Magor • 24 Coldra • 25 Caerleon • 25A Grove Park • 26 Malpas • 27 High Cross • 28 Tredegar Park • 29 Castleton • 30 Pentwyn • 31 Junction 31 • 32 Coryton • 33 Cardiff West • 34 Miskin • 35 Pencoed • 36 Sarn • 37 Pyle • 38 Margam • 39 Groes • 40 Taibach • 41 Pentyla • 42 Earlswood • 43 Llandarcy • 44 Lon-Las • 45 Ynysforgan • 46 Llangyfelach • 47 Penllergaer • 48 Hendy • 49 Pont Abraham
Heathrow SpurCherry Lane • 4 Heathrow • 4A Concord
Former RoutesBray • 9A Cox Green • 9B The Thicket // 19 Hambrook • 19A Frenchay // 20 Almondsbury • 21 Aust • 22 Newhouse • 23 Magor // 28  Tredegar Park • 29 St Mellons
Defunct Newport
Bypass Proposal
23 Rogiet • 25 Glan Llyn • 27 Dock Way • 29 Castleton