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A308(M) motorway

From Wikipedia, the free encyclopedia

A308(M) shield

Route information
Maintained by Highways England
Length0.6 mi (1.0 km)
Major junctions
East endM4 Junction 8/9
Junction 8-9.svg

M4 motorway
UK-Motorway-A404 (M).svg

A404(M) motorway
West endMaidenhead (Bray Wick)
Maidenhead, Windsor, Bracknell
Road network
Looking towards the A308(M) terminus with the A308 and A330.
Looking towards the A308(M) terminus with the A308 and A330.

The A308(M) is a motorway in Berkshire, England. It is 0.6 miles (1 km) long.[1] It forms part of the Maidenhead bypass and runs from the M4 at junction 8/9 to the A308 south of Maidenhead town centre.


In 1961[2] the A4(M)[3] was opened and 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[2] 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.[4] When the M4 was extended in 1971,[2] a new junction was provided to connect with what would become a spur. This new interchange was built too close to the original junction 8, so this had to be closed. A new junction (numbered 8/9 so as not to confuse motorists) was built. The original M4 north of this was renumbered as the A423(M) and in the 1990s this was again reclassified as the A404(M). 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.


A308(M) motorway
Eastbound exits Junction Westbound exits
Road continues as A308 to Maidenhead, Windsor
A330 to Ascot and Bracknell (A3095)
A308 & A330
London, Reading (M4) A308(M), Oxford A404(M)
Maidenhead, Windsor A308, Ascot A330, Bracknell A3095 Start of motorway
Start of motorway
Maidenhead (Central) A308(M)
M4 J8/9
The West M4(W), London M4(E)
High Wycombe A404(M)

Information above gathered from Advanced Direction Signs April 2011

See also


External links

KML is from Wikidata
This page was last edited on 10 January 2021, at 00:00
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