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Bar End Interchange

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Bar End Interchange
Location Map ( geo)
M3 east of Winchester - Geograph - 133004.jpg
Looking north from the M3
Cameraicon.png View gallery (13)
Bar End, Winchester, Hampshire
Highway Authority
Highways England
Junction Type
Half-dumbbell (modified)
Roads Joined
M3, A31, B3330

Bar End Interchange is junction 10 of the M3, where the A31 from Alton merges. It also forms the main access point for Winchester.

It only has south-facing sliproads, meaning a lot of Winchester traffic has to be sent through here and on to J9.

The junction is immediately north of Twyford Down, which causes the sliproads to have steep gradients.


The junction marks the point where the A33 Winchester Bypass veered west to avoid St Catherine's Hill - this can still be seen in an aerial photo. Bar End Road met the bypass at a crossroads, which was later upgraded to a pair of LILOs linked by a flyover. With this upgrade, it became one of the main routes into Winchester, and Bar End Road became part of the A272.

In 1985 the road north of here was upgraded to motorway, and as part of the project the A31 was introduced to the junction (previously it entered Winchester by crossing Spitfire Bridge). The A31 ran along the old alignment of the Bypass and met the junction at what is now the northern roundabout, but at the time it was south of the new road.

In 1995 the final section of the M3 was completed, resulting in the current layout. As part of this project, a TOTSO was created on Bar End Road where it diverts to meet the new junction. The A272 was downgraded to B3330. The western roundabout was signalised in 2004.

One of the rejected options for the M3 upgrade would have run slightly north of here, with a large roundabout interchange being built instead. A new road would have run on a similar route to the old railway, straight to the city centre.


Route To Notes


The MIDLANDS, London, Basingstoke


Southampton, Bournemouth, Portsmouth


Alton, Petersfield (A272), London (A33) (M3), Newbury (A34) Only Alton is signposted from the motorway.


Winchester (City Centre)


London, Basingstoke, Newbury (A34) Part of the Winchester Bypass.


Southampton, Eastleigh, Bournemouth Last remaining section of the Winchester Bypass.


Bar End Interchange
Related Pictures
View gallery (13)
M3 east of Winchester - Geograph - 133004.jpgRoundabout off M3 Junction 10, WInchester - Geograph - 879688.jpgRoundabout off M3 Junction 10, Winchester - Geograph - 879670.jpgM3 J9 and J10 improvements - Coppermine - 15259.pngM3 Junction 10, Northbound (C) David Dixon - Geograph - 3285505.jpg
Junctions on the M3, A303 and A316
A316Hogarth Roundabout • Chalkers Corner • Manor Circus • Richmond Circus • St. Margarets Roundabout • London Road Roundabout • Whitton Road Roundabout • Hospital Bridge Roundabout • Apex Corner • Waterworks Roundabout • Sunbury Cross
M3Sunbury Cross • Shepperton • 2 Thorpe • 3 Bagshot • 4 Frimley • 4A Minley • 5 Hook • 6 Black Dam • 7 Dummer • 8 Popham • 9 Winnall  • 10 Bar End • 11 Hockley Cross • 12 Allbrook • 13 Leigh Road • 14 Chilworth
A303Popham • Overton Road • Micheldever • Bullington Cross • Barton Stacey • Longparish • Picket Twenty • Winchester Road • Salisbury Road • Hundred Acre • Thruxton • Quarley • Parkhouse Cross • Double Hedges • Folly Bottom • Countess Roundabout • Stonehenge Bottom • Longbarrow Roundabout • Deptford • Furzehedge • Mere • Tinkers Hill • Wincanton • Chapel Cross • Hazelgrove Roundabout • Camel Cross • Podimore Roundabout • Ilchester Mead • Cartgate Roundabout • Hayes End Roundabout • Southfields Roundabout • Eagle Cross • Marsh • Stopgate Cross • Devonshire House
Junctions on the A31
Hogs Back • Shepherd and Flock • Hickley's Corner • Coxbridge Roundabout • Chawton Roundabout • Spitfire Roundabout • Bar End • Cadnam  • Rufus Stone • Stoney Cross • Picket Post • Forest Corner • Salisbury Road Junction • Ashley Heath Roundabout • Woolsbridge  Roundabout • Azalea Roundabout • Ameysford Roundabout • Canford Bottom Roundabout • Red Post • Merley Roundabout

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