Traffic monitoring system ROMANSE reports heavy delays remain on all diversions.
The crash happened between junction 9 at Winnell, and the A33 Winchester by-pass.
ROMANSE reports: ‘#A34 Northbound - All lanes RE-OPENED after earlier RTI between J9 #Winnall and A33 Winchester By-Pass, heavy delays remain on all diversions.’
The route closure was reported at 7.23am, which caused major disruption in the area.
Motorists were warned to stay clear.
ROMANSE reported: ‘#A34 Northbound - All lanes BLOCKED due to RTI between J9 #Winnall and A33 Winchester By-Pass, heavy delays on all approaches. Avoid if possible!’
National Highways have advised drivers to allow extra time for their journeys, as delays ease.
A statement from National Highways said: ‘All lanes are now open on the #A34 northbound between the #M3/A34 and #A33 near #Winchester following an earlier collision.
‘There are currently minimal delays and approx. less than 1 mile of congestion.
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‘Please allow extra time for these delays to clear.’
There were estimated delays of up to 40 minutes on the M3 northbound as a result of the collision.
ROMANSE reported: ‘#M3 Northbound - Slow between J14/#M27 #Eastleigh and J9/#A34 #Winnall due to ongoing closure of #A34 N/B, approximately delay of 40 minutes’.