Drivers traveling through northern San Luis Obispo County may encounter traffic delays.
Caltrans crews are installing a roundabout on Highway 46 West at Vineyard Drive near Templeton.
Drivers can expect to see minor changes in the temporary four-way stop starting this week.
Caltrans officials urge drivers to slow down as they approach the intersection.
The contractor for this $4 million project is CalPortland Construction of Santa Maria.
The project is expected to be complete this summer.