A308(M) motorway

A308(M)
A308(M) highlighted in blue
Route information
Maintained by National Highways
Length0.6 mi (970 m)
Existed1971–present
Major junctions
East endM4 Junction 8/9
Major intersections
M4 motorway

A404(M) motorway
West endMaidenhead (Braywick)
Location
CountryUnited Kingdom
Primary
destinations
Maidenhead, Windsor, Bracknell
Road network
A194(M) A329(M)

The A308(M) is a motorway in Berkshire, England. It is 0.6 miles (0.97 km) long. It forms part of the Maidenhead bypass and runs from the M4 at junction 8/9 to the A308 south of Maidenhead town centre. The A308(M) is generally considered to be Britain's second shortest motorway, after the A635(M) on the Mancunian Way.