Lane closings begin this week on the Robert Moses Causeway between the Captree Bridge and the Fire Island Inlet Bridge, the state Department of Transportation said.

One southbound lane will be closed as needed from 10 a.m. to 3 p.m. weekdays for construction on the Robert Moses Drawbridge, the agency said.

On the northbound side, the current start of the third travel lane over the bridge will be temporarily relocated several hundred feet to the north so the additional northbound travel lane will begin beyond the construction zone, the agency said.

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The drawbridge will not open for boaters until construction is substantially completed by the end of this year, DOT said.

The construction work will be suspended early on Friday through the end of September when the weather is good to minimize the impact on Fire Island residents and beachgoers, DOT said.