A1(M) motorway
A1 is the designation given to a series of four separate motorway sections in the UK. Each section is an upgrade to a section of the A1, a major north–south road which connects London, the capital of England, with Edinburgh, the capital of Scotland. The first section, the Doncaster Bypass, opened in 1961 and is one of the oldest sections of motorway in Britain. Construction of a new section of A1 between Leeming and Barton was completed on 29 March 2018, a year later than the anticipated opening in 2017 due to extensive archaeological excavations. Its completion linked the Barton to Washington section with the Darrington to Leeming Bar section, forming the longest A1 section overall and reducing the number of sections from five to four.
In 2015, a proposal was made by three local government organisations to renumber as M1 the section of A1 between Micklefield and Washington, making this section a northern extension of the M1.
Overview
From London to Sunderland, of the route are non-motorway while the remaining are to motorway standards.The motorway sections are discussed below.
South Mimms to Stotfold
This section opened in stages:- Junctions 1 to 2 opened in 1979
- Junctions 2 to 4 opened in 1986
- Junctions 4 to 6 opened in 1973
- Junctions 6 to 8 opened in 1962
- Junctions 8 to 10 opened in 1967
Alconbury to Peterborough
This section runs through the Cambridgeshire countryside between Alconbury and Peterborough. It was officially opened by Lord Whitty on 31 October 1998, and is the most isolated of the motorway sections as it connects with no other motorway. It is designed to a noticeably high standard, of it being four lanes from junction 14 at Alconbury to junction 16 at Norman Cross in each direction whilst the remainder has three lanes in each direction. It is managed by Road Management Services under a DBFO contract with National Highways.Junctions
''Following the rerouting of the A14 road in 2019 at Brampton Hut interchange this section needs review.''Doncaster By-Pass (Blyth to Skellow)
This section which runs from Skellow in South Yorkshire to the village of Blyth in the far north of Nottinghamshire first opened in 1961 and was one of the first sections of motorway to be built in Britain; it has two lanes in each direction. Between junction 36 and 37 the motorway crosses the River Don on the Don Bridge.Junctions
Data from driver location signs are used to provide distance and carriageway identifier information.Skellow to Darrington (proposed)
Proposals were made by a previous government to upgrade the Skellow to Darrington section of the A1 to motorway, meaning the entire stretch of A1 from Blyth in Nottinghamshire to Washington in Tyne and Wear would be motorway-standard road.Darrington to Washington
This section opened in sections:- Walshford to 49 opened in 1995
- Junctions 43 to 44 opened in 1999
- Junction 46 to temporary junction at Walshford opened in 2005
- Junction 40 to south of 43 opened in 2005 and 2006
- Junctions 44 to 46 opened in 2009
- Junctions 49 to 51 opened in 2011 and 2012
- Junctions 51 to 56 opened in 2017 and 2018 - there are no junctions 54 and 55
- Junctions 56 to 59 opened in 1965
- Junctions 59 to 63 opened in 1969
- Junctions 63 to 65 opened in 1970