Network changes - 1930s

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A list of the changes to the road network in Great Britain from 1930 - 1939. Includes road openings and renumberings.

Road Openings

Year Number on opening Location Traditional County Notes
1931 A6 Oadby Leicestershire Oadby Bypass
1931 A38 Kennford Devon Kennford Bypass
1932 A12 Chelmsford Essex Chelmsford Original Bypass
1932 A30 Basingstoke Bypass Hampshire Opened between 1 and 4 December 1932. Numbering between December 1932 and 1 April 1933, when it became A30, is unclear.
1932 A77 Fenwick Ayrshire Fenwick Bypass; renumbered as M77 in 2005
1932 A994 Glen Bridge, Dunfermline Fife The contract to build was awarded in 1930, and the bridge opened in 1932.
1932 Nottingham Western Boulevard Nottinghamshire Opened by John Pybus, Minister of Transport, on 21 November 1932.
1932 Lambeth Bridge Middlesex Opened by King George V on 19 July 1932.
1932 A1 Haddington Bypass East Lothian Now part of A199.
1932 A1 Bilsdean/Dunglass Bypass East Lothian
1933 A309 Hampton Court Bridge Middlesex Opened by the Prince of Wales.
1933 A316 Chiswick Bridge Middlesex Opened by the Prince of Wales.
1933 A316 Twickenham Bridge Middlesex Opened by the Prince of Wales.
1933 A737 Beith Ayrshire Beith Bypass
1933 A5111 Derby Outer Ring Road Derbyshire First section from Duffield Road to Uttoxeter Road.
1934 A31 Guildford Bypass Surrey Opened by Leslie Hore-Belisha, Minister of Transport, on 27 July 1934.
1934 A59 Maghull Bypass Lancashire Opened by Leslie Hore-Belisha, Minister of Transport, on 4 December 1934.
1934 A40 Wolvercote to Barton Oxfordshire Oxford Northern Bypass
1934 A580 Liverpool - East Lancashire Road Lancashire Opened by King George V on 18 July 1934.
1934 Queensway (Mersey) Tunnel Lancashire / Cheshire Opened by King George V on 18 July 1934.
1934 A583 Kirkham Bypass Lancashire Opened by Leslie Hore-Belisha, Minister of Transport, on 4 December 1934.
1935 A30 Egham Surrey Egham Bypass
1935 A38 Pinhoe to Birchy Barton Devon Exeter bypass Stage 1, later renumbered as B3181
1935 A38 Birchy Barton to A379 Devon Exeter Bypass Stage 2, later renumbered as A3015 & A379
1935 A133 Colchester Essex Colchester Bypass
1935 B1398 Scampton Diversion Lincolnshire Diversion for re-opening and extension of RAF Scampton
1936 A876 Kincardine Bridge Fife / Clackmannanshire Opened by Lord Elgin, Lord Mar and Kellie, and Charles Horsbrugh (respectively Conveners of the counties of Fife, Clackmannan, and Stirling) on 29 October 29 1936.
1936 A5117 Helsby - Shotwick Cheshire Opened by Leslie Hore-Belisha, Minister of Transport, on 18 July 1936.
1937 Chelsea Bridge Middlesex Opened by Mackenzie King, Prime Minister of Canada, on 6 May 1937.
1938 A24 Findon Sussex Findon Bypass
1938 A24 Mickleham Surrey Mickleham Bypass
1938 A38 A379 to Matford Devon Exeter Bypass Stage 3 opened by Leslie Burgin, Minister of Transport, on 22 February 1938.
1938 A5111 Derby Outer Ring Road Derbyshire Raynesway, the fourth section, was opened by Alderman Edward Paulson, Mayor of Derby, in the absence of the Minister of Transport on 28 September 1938. The final section linking Nottingham Road and Duffield Road to the NE of the town was never built.
1938 A45 Coventry Warwickshire Coventry Southern Bypass
1938 A85 Longforgan - Invergowrie Angus Dualling, later renumbered to A90 in 1994
1938 A565 Formby Bypass Lancashire Opened on 10 December 1938.
1938 B6447 Griffin Arterial Road, Blackburn Lancashire
1939 A22 Caterham Bypass Surrey
1939 A27 Sompting Bypass Sussex
1939 A30 Redruth Cornwall Redruth inner Bypass
1939 A303 Ilminster "Bypass" Somerset This was an improvement of "The Butts", which evidence suggests was probably already the A303, not a new road
1939 A45 Coventry Southern Bypass Warwickshire Opened throughout in November 1939

Other changes in 1930s

There was a major revision of the road numbering scheme in the mid-1930s, which was implemented on 1 April 1935. This is the only countrywide revision to have taken place in the history of British road numbering - all other changes have been implemented piecemeal.

The following handwritten changes dated 1/4/35 appear on the 1928/29 edition of MoT Road Map sheet 38 covering the Southampton, Portsmouth and Salisbury areas:

  • A27 rerouted between West End and Park Gate via Bursledon; old route becomes A3051
  • B2147 North Street, Emsworth renumbered B2148
  • B2148 between Horndean and Rowland's Castle renumbered B2149
  • B3003 renumbered B3002 (extension)
  • B3005 renumbered B3006 (extension)
  • B3033 renumbered A333 (extension)
  • B3055 extended from Brockenhurst to Hinton Admiral
  • B3056 number reallocated to Lyndhurst to Beaulieu road
  • B3077 renumbered B3079 (extension)
  • B3385 number allocated to Fareham to Lee-on-the-Solent road

Isle of Wight



Network changes - 1930s
Historical Information
1922 Road Lists Class IZone 1 • Zone 2 • Zone 3 • Zone 4 • Zone 5 • Zone 6 • Zone 7 • Zone 8 • Zone 9 • Northern Ireland
1922 Road Lists Class IIZone 1 • Zone 2 • Zone 3 • Zone 4 • Zone 5 • Zone 6 • Zone 7 • Zone 8 • Zone 9 • Northern Ireland
1935 Road numbering revisionZone 1 • Zone 2 • Zone 3 • Zone 4 • Zone 5 • Zone 6 • Zone 7 • Zone 8 • Zone 9
Mass renumbering schemes1922 Draft Road Lists • 1924 A1 Renumbering • 1920s South Buckinghamshire Renumbering • 1933 A30 Renumbering • 1933 Scotland Renumbering Proposals • 1934 A82 Renumbering • Tyneside Renumberings • Motorway linked Renumberings • Republic of Ireland T and L roads
Network Changes1700-1799 • 1800-1899 • 1900-1909 • 1910-1919 • 1920-1929 • 1930-1939 • 1940-1949 • 1950-1959 • 1960-1969 • 1970-1979 • 1980-1989 • 1990-1999 • 2000-2009 • 2010-2019