Melbourne's train network is still struggling after the evacuation of Metro Trains' control centre at 7.30pm.

Train lines were all suspended for about half an hour and commuters reported some level crossings were also in lockdown.

All lines were suspended on Thursday evening due to an evacuation at Metro's control centre. Credit:Penny Stephens

Train services resumed about 8pm but Metro said lines were experiencing major delays. Trams were also delayed in many parts of the city after failing to cope with heavy demand.

Then at 10.45pm the Glen Waverley line faced major delays after a truck hit a rail bridge near Holmesglen Institute in Glen Waverley.