A404(M) motorway
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| A404(M) motorway | |
| Length | 1 miles 1.6 km |
| Direction | North - South |
| Start | M4 Junction 8/9 |
| Primary destinations | Maidenhead |
| End | Woolley Green |
| Construction dates | 1961 - 1961 |
| Motorways joined | 8/9 -  M4 motorway  A308(M) motorway |
The A404(M) is a motorway in Berkshire, England and can be referred to as the Maidenhead West Bypass. It joins the M4 with the A404 dual carriageway to High Wycombe, Marlow and the M40. It was once known as the A423(M).
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[edit] Route
The A404(M) leaves the M4 at Junction 8/9, and heads north, passing Maidenhead and forming the town's western bypass before terminating at a junction with the A4 at Woolley Green, just outside Maidenhead. The road becomes the A404 which continues north towards Marlow and the M40.
[edit] History
The road was originally opened in 1961[1] as part of the A4(M) Maidenhead Bypass which ran from the existing junction 7, through a junction with the A308 and ending at a junction with the A4.
In 1963 the Slough bypass was opened[1] to junction 7 and the A4(M) was renumbered M4, junction 8 being with the A308 and junction 9 with the A4.
The proposed route of the M4 was then changed to go south of Reading, instead of north of it[2]. When the M4 was extended in 1971[1], a new junction was provided to connect with what would become a spur. As this new interchange was built too close to the existing junction 8, this had to be closed. A new spur, the A308(M), was built to maintain access to the A308 and connected with the A404(M) and the M4 at the same grade separated roundabout. This new junction was numbered 8/9 so as not to confuse motorists and the interchange with the A4 became junction 9A[3]. The old M4 was renumbered A423(M) as it was a direct continuation of the A423 to Oxford. A new junction was subsequently added part way along the bypass and this was numbered 9A and the junction with the A4 was numbered 9B.
Over time the A423 was superseded by the M40 and the A404 was improved to dual carriageway standard, with a new routeing. Since the road now ran through a rebuilt junction 9b onto the A404 this motorway spur was reclassified A404(M) in the 1990s
[edit] Junctions
| A404(M) Motorway | ||
| Northbound exits | Junction | Southbound exits |
| Road continues as A404 to Marlow | J9B | Reading, Maidenhead A4 |
| Reading, Maidenhead A4 | Start of Motorway | |
| Cox Green, White Waltham | J9A | Cox Green, White Waltham |
| Start of Motorway | M4 J8/9 | Maidenhead (Central) A308(M) The WEST, South Wales, London, Reading M4 |
[edit] References
[edit] See also
[edit] External links
- CBRD Motorway Database - A404(M)
- Pathetic Motorways
- Google Local satellite photo showing original route of the A4(M)/(M4).
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Motorways in the United Kingdom | |
| Great Britain: M1 • M2 • M3 • M4 • M5 • M6 • M6 Toll • M8 • M9 • M10 • 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) | edit | |
| Past: M41 • M63 • A18(M) • A40(M) • A41(M) • A102(M) • A6144(M) Unbuilt: M12 • M15 • M31 • M64 Future: M4 Toll | ||
