Looking at the diverted track in St Kilda Rd provokes memories of the last such project some 50 years ago - when the St Kilda Rd tramway just north of St Kilda Junction was dug up and diverted for the project linking Queens Rd and Dandenong Rd via "Queensway".
Here's a pic of that diversion.
The standards for track support - and for fencing to keep the public (i.e. me) out of the works area - were vastly different.
Mal Rowe - there for both.