A33 road
Major junctions
From:	Reading
	A329 road  A4 road  M4 motorway  A339 road Break In Road  A30 road  A34 road Break In Road  M3 motorway  A27 road  A35 road  A335 road  A3024 road  A3025 road  A3057 road
To:	Southampton
Location
Primary destinations:	Basingstoke Winchester
Road network
Roads in the United Kingdom Motorways A and B road zones

The A33 is a major road in England, situated in the counties of Berkshire and Hampshire. The road currently runs in three disjoint sections.

[edit]Route

[edit]Reading - Basingstoke

The A33 near Spencers Wood just south of Reading.

The A33 currently starts on the Inner Distribution Road and bypasses most of suburban Reading, servicing the Kennet Island residential development, Madejski Stadium and Green Park Business Park, towards the M4, where it connects at junction 11. A two-year redevelopment scheme ran from early 2008 until late 2010, widening the northern section of the dual carriageway and significantly expanding and improving the motorway junction. The Mereoak Roundabout south of the motorway was replaced with two separate junctions with traffic lights.^[1]

The section south of the M4 is dual carriageway up to the county boundary with Hampshire, where it reverts to single carriageway towards Basingstoke.^[2]

[edit]Basingstoke - Winchester

The second section of the A33 starts near Popham, southwest of Basingstoke at a junction with the A30. The road from here to Winchester is a mix of single and dual carriageway, that was progressively improved in the late 1960s.^[3] AtKings Worthy, the road diverts onto part of the original Winchester Bypass, constructed in the late 1930s,^[4] up to the A34.

[edit]Southampton

The third section of A33 starts at the Chilworth Roundabout, a junction with the M3 and A27, and runs south into the centre of Southampton, then west past the docks to the M271.

[edit]History

The A33 originally started at a junction with what was the A32 at Riseley Common and was a continuous route to Southampton^[5] Between Basingstoke and Southampton, it mostly followed the course of the historic Roman Road between these towns.^[6] This section of the route became part of the London - Southampton Trunk Road.^[7] The road was progressively detrunked as the M3 was extended.

The Winchester Bypass was constructed in the mid 1930s. While a significan