Severe congestion after A34 closed southbound between junctions with the A343 and the A303

UPDATED at 1.40pm: One of two lanes are closed in both directions between the B4640 and the A303 due to central reservation barrier damage following a collision.

The A34 is closed southbound between the junctions with the A343 and the A303, Newtown Common to Lower Bullington, due to an overturned vehicle.

There are currently severe delays against expected traffic.

National Highways says normal traffic conditions are expected between 10.45am and 11am today (Saturday).

Southbound traffic is advised to follow the Solid Triangle Symbol diversion route:

From the A34 southbound, leave at the Wash Common interchange.

At the roundabout, use the thirrd exit and join the A343.

Follow the A343 beneath the A34 and continue for approximately 14 miles into Andover.

At the A3093 roundabout, use the 1st exit and join the A3093 (Churchill Way).

Continue on the A3093 over two intermediate roundabouts, to the A303 Picket Twenty interchange.

Use the first exit and join the A303 eastbound. Follow for approximately five miles to the A34 Bullington Cross interchange.

Leave the A303 and continue to a roundabout. Use the second exit and join a link road to a further roundabout, passing beneath the A34 and A303 between.

At the roundabout, use the second exit and rejoin the A34 southbound.

Updates to follow.