THE HINDHEAD tunnel has now re-opened after engineers worked their magic.
The 1.1-mile tunnel was closed at about 3.45pm due to a problem with its electricity supply.
It had to be closed for health and safety reasons.
Traffic was being diverted along a 26-mile route between the A325 at Liphook and the A31 at Guildford.
The power supply, which is needed for signs and signals in the tunnel, was restored shortly before 5pm today.
Both northbound and southbound lanes are now open, but with a speed restriction of 40mph.
A spokeswoman for the Highways Agency said: ‘The engineers have been on site and were able to re-open the tunnel. There are some residual delays.
‘There were delays of 20 minutes northbound and 30 minutes southbound. Obviously this will reduce now the tunnel is open.’
She said the speed restriction would be lifted once the traffic queues have gone.