Chronology Maps

1976 1977 1978

Click a section name to see full details and a map.

Completed Route Name Start End Original number
M90 Glenfarg Bypass J8 Arlary Arngask Road
M25 Darenth - Swanley J2 Darenth J3 Swanley
M11 Redbridge - South Harlow J3 Redbridge J7 Hastingwood
M4 Pontarddulais Bypass J46 Llangyfelach J49 Pont Abraham
M5 Exminster Section J30 Sandygate J31 Pearce’s Hill
M69 Coventry Section M6 J2 Ansty J1 Stretton Baskerville
M20 Swanley - West Kingsdown J1 Swanley London Road
M18 West Moor - Thorne J4 West Moor Thorne Road
M180 Brigg Bypass Castlethorpe J5 Barnetby Top
M58 Skelmersdale and Up Holland Bypass J4 Glenburn Road J6 Orrell A506
M4 Tredegar Park - St Mellons J28 Tredegar Park J29 Castleton
A48(M) Tredegar Park - St Mellons J29 Castleton J29A St Mellons
M90 Bridge of Earn Bypass J9 Muirmont J10 Craigend
M4 Pyle Bypass J37 Pyle J39 Groes
M4 Coryton - Pencoed J32 Coryton J35 Pencoed

In this section

What's new

The long way round

When a road is closed, why isn't the diversion route just the quickest way past the closure?

Signs and sensibility

The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.

A bridge under troubled bridges

A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.

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M4 Chiswick-Langley

An early triumph of the motorway programme, the M4 between Chiswick and Langley linked Central London to Heathrow - then still known as London Airport - and was the start of a new motorway west.