Melbourne Water will be undertaking sewer inspections around Seddon this month on streets that can be busy with bikes.
Bike lanes will remain open, however riders will need to take care as there will be detours around manholes while work is underway.
The works involve two sewers: The Youell Street Sewer, and the Youell Street Intercepting Sewer.
The investigations are preliminary to a larger sewer relining project.
There will be activities on sections of Albert Street, Bristow Street, Hyde Street and surrounding areas.
The manhole locations are shown by the blue dots on the map.
Major works on this project are scheduled to start in February 2021.