Next week would be a bad time to be late for the ferry.
From 7 a.m. to 3:30 p.m. Monday, the eastbound lane on Route 48 will closed for construction between Chapel Lane and Moores Lane, with all eastbound traffic diverted down Chapel Lane to Main Road.
The detour will be in place Monday through Friday.
The shutdown will permit a Suffolk County Department of Public Works contractor to undertake preparation work for a larger repaving project expected to begin in the fall, said Southold Police Chief Martin Flatley. When work on the eastbound lane is completed, the contractor will shift to the westbound lane, which will require a separate detour.
Police are planning for at least one lane to be closed for about a month, the chief said.