M31 motorway

M31 motorway
Route information
Length:	22.0 mi (35.4 km)
Existed:	1973 – present
History:	Completed in 1975 as A329(M)
Major junctions
From:	M25 motorway
	M3 motorway M4 motorway
To:	M4
Location
Primary destinations:	Bracknell Wokingham Reading
Road network
Roads in the United Kingdom Motorways A and B road zones

The M31 was planned as a Reading to M3 motorway which was dubbed the 'M3 – M4 link motorway'. It would have provided a direct high-speed route between the two motorways. The motorway was planned at the same time as the largely unrealised London Ringways scheme and an additional section was planned that would have taken the M31 south and east from the M3 to connect to the scheme's Ringway 4 (now the M25) providing a shorter route for traffic travelling between the west and Surrey and Kent.

Only part of the planned route was built; it bears the designations A329(M) and A3290. Had the motorway been constructed it would have provided an alternative to the south-west section of the M25, reducing the motorway journey between Reading and Byfleet by approximately 10 miles (16 km) and alleviating traffic on what is the M25's busiest section.^[1][2]

References

External links

• Pathetic Motorways
  • M31
  • M31 route map
  • Map of planned northern section of M31/A329(M)
• CBRD – A329(M)

Motorways in the United Kingdom
Great Britain	M1 M2 M3 M4 M5 M6 M6 Toll M8 M9 M11 M18 M20 M23 M25 M26 M27 M32 M40 M42 M45 M48 M49 M50 M53 M54 M55 M56 M57 M58 M60 M61 M62 M65 M66 M67 M69 M73 M74 M77 M80 M90 M180 M181 M271 M275 M602 M606 M621 M876 M898 A1(M) A3(M) A38(M) A48(M) A57(M) A58(M) A64(M) A66(M) A74(M) A167(M) A194(M) A308(M) A329(M) A404(M) A601(M) A627(M) A823(M)
Northern Ireland	M1 M2 M3 M5 M12 M22 A8(M)
Former	M10 M41 M63 A18(M) A40(M) A41(M) A102(M) A6144(M)
Unbuilt	M12 M15 M16 M31 M64
Proposed	M4 relief road
Related articles	Highways England Smart motorway
Category Commons

Coordinates: 51°24′58″N 0°48′15″W / 51.41602°N 0.80423°W / 51.41602; -0.80423