There will be overnight lane closures on the A1(M) between Stevenage and Welwyn while work is carried out to check the road’s condition from Thursday to Friday.
Highways England is carrying out the ‘pavement investigations’ between junctions 6 and 7.
A spokeswoman told the Comet that the work will start late at night on Thursday when traffic falls below a certain level, probably around 11pm, and go on until about 5am on Friday.
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