Victorians are being warned to brace for road delays and cancelled train and tram services as construction on more than 120 major projects and level crossing removals enters an "intensive phase".

From March 23, trams along Flinders Street will be disrupted for almost a week due to works connected to the new Town Hall Station construction.

Premier Daniel Andrews inspects the first completed section of the Metro Tunnel on Sunday.

Toorak Road will be closed for nine days across April while a rail bridge is built in Kooyong to remove a level crossing.

Parts of the Frankston train line will be closed for a week for work on the Cheltenham and Mentone stations, before line closures for two an a half months from the end of April. Three level crossings will also be removed as part of the works.