Annaleigh Sturmann owns Loaf Kitchen on the main drag and she said business had dropped last weekend - the first since the closure.

"We were significantly down on the previous two weeks," Ms Sturmann says.

READ MORE: Businesses cut off as Lawrence Hargrave Drive becomes a cul de sac

"I can say the global pandemic had less of an impact on us than the road closure has. We're talking about 30 per cent down - but that was week one."

She said she's expecting it to be even worse in the coming weeks, as there were still a number of day trippers driving up and not realising the road was closed.

"I think business will get even worse once people start to fully understand the road is going to be closed for eight weeks," she said.

"I think this last week will probably be the best trade we'll have for the next seven weeks."

At this stage she still planned on staying open for the entire eight weeks of the closure - some of her staff are on JobKeeper which is helping with the wages - but that may change if things get really bad.

The closure also a headache for Ms Sturmann as she lives in Engadine and had a second store in Cronulla.

Driving to the Stanwell Park store now takes her an extra 35 minutes - but she starts at 6am and is going against the traffic, which makes things a little easier.

"I always see all the traffic that's going up north, there's not as much that's heading south at that time of the morning," she says.

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