Drivers in Bridge of Weir are being warned to expect disruption on a busy road for around five months.
From Monday, July 24, the village's Main Street is reduced to one lane near the junction with Mill Brae as part of a £1million project to tackle sewer flooding.
Temporary traffic lights are in operation and there are parking restrictions in place to allow vehicles to wait for the green light safely.
Georgina Reid, Scottish Water's corporate affairs manager in the west, said: "We are installing a larger sewer in Mill Brae and a section of Main Street opposite the Amaretto restaurant.
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"The work will make a huge difference protecting properties from sewer flooding and will deliver long-term benefits for the local community.
"We are investing many millions of pounds in similar projects up and down the country to protect customers and safeguard the environment."
The project is being delivered by Caledonia Water Alliance and is expected to be completed by the end of November.
Scottish Water has apologised for any inconvenience caused and thanked local residents, businesses and road users for their patience and understanding while these essential works are carried out.
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