The fourth and final A27 full weekend closure has been confirmed.
The road will be shut on the eastbound carriageway between the Manor roundabout in Lancing and Shoreham from 9pm on June 7 until 6am on June 10.
The closure will be in place to allow highway teams to finish off the new roundabout leading to the New Monks Farm development.
Motorists will be diverted via the A24 and A283.
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A spokesman for National Highways said: "Local access will be maintained to the airport and residents with direct access off the eastbound A27 within the closure.
"There will also be regular overnight lane closures on both sides of the A27 over the next few months."
The work is expected to be completed next month.
This closure will be the fourth on this part of the A27 this year.
The road has been closed for three full weekends in April and May.
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