OVERNIGHT road closures will be in place on the A1(M) this weekend as work to overhaul the Hatfield Tunnel continues.
The motorway – which had initially been set to close overnight over the past weekend – will now shut between junctions 3 and 4 from 10pm this Friday to 5am on Saturday.
It will also be shut between 10pm on Sunday and 5am on Monday.
A fully-signed diversion route via the A1001 and A414 will be in operation during this time.
As a result of these changes, there will be a two-lane contraflow in both directions in the northbound tunnel while the southbound tunnel is being revamped.
There will be narrow lanes and a 40mph speed limit 24 hours a day.
Drivers are being warned to expect moderate delays.
A spokesman for the Highways Agency, which is overseeing the refurbishment of the tunnel, said last weekend’s work was postponed for safety reasons.
The refurbishment is due to be completed in spring 2011.
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