Newhouse

Newhouse, or Chepstow Interchange, is junction 2 of the M48, formerly junction 22 of the M4. The roundabout is called Thornwell which is named after the suburb of Chepstow near the motorway. It is most easterly motorway junction in Wales.

In 2020 the speed limit on the roundabout was reduced to 40 mph as part of the new Red Route on the A466 which was reduced to 50 at the same time. Strangely this speed limit only applies on the roundabout and none of its exits. The road to the Industrial Estate is 30, the A466 is 50 whereas it's NSL on the M48 entry slips and Conway Drive. Conway Drive also has the distinction of having one of the shortest NSL limits in the UK at less than 200 yards.

Routes

Route	To	Notes
M48	Cardiff/Caerdydd, Newport/Casnewydd (M4)
M48	London/Llundain, Bristol/Bryste (M4)
A466	Chepstow/Cas-gwent (A48)
R145	Thornwell
	Newhouse Farm Ind. Est. / Yst. Ddiw. Fferm Newhouse
M4	Cardiff/Caerdydd, Newport/Casnewydd
M4	London/Llundain, Bristol/Bryste

Strip Maps

• 

  The current layout of the interchange.

Links

legislation.gov.uk

• The M48 Motorway (Eastbound and Westbound Exit Slip Roads at Junction 2 (Newhouse Roundabout), Chepstow) (40 mph Speed Limit) Regulations 2021