A308(M) motorway

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A308(M) motorway shield

A308(M) motorway
Route information
Length: 0.6 mi (1.0 km)
Existed: 1971 – present
Major junctions
From: Holyport
  Junction 8-9.svg UK-Motorway-M4.svg
M4 motorway
UK-Motorway-A404 (M).svg
A404(M) motorway
To: Bray
Location
Primary
destinations
:
Maidenhead, (Windsor)
Road network
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] and is possibly England's shortest motorway,[2] although the westbound carriageway of the A64(M) is shorter. It runs from the M4 at junction 8/9 to the A308.

History[edit]

In 1961[3] the A4(M)[4] 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[3] 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.[5] When the M4 was extended in 1971,[3] 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.

Junctions[edit]

A308(M) motorway
Eastbound exits Junction Westbound exits
Road continues as A308 to Maidenhead, Windsor
A330 to Ascot and Bracknell (A3095)
A308 & A330
Terminus
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
A404(M)
The West M4(W), London M4(E)
High Wycombe A404(M)

Information above gathered from Advanced Direction Signs April 2011

See also[edit]

References[edit]

External links[edit]

Route map: Google / Bing