VicRoads advises motorists of changed traffic conditions at the Midland Hwy and Tatura-Undera Rd intersection.
A temporary roundabout is in place to help motorists around the work zone, while the permanent roundabout is constructed.
The speed limit is set at 40km/h through the site and motorists can expect minor delays.
The roundabout works are expected to be finished by the end of July — weather permitting.
For the latest traffic information, visit traffic.vicroads.vic.gov.au or download the VicTraffic app via your app store.