Yesterday when I was using the 109 down to North Port (and back), I couldn't help but notice an amount of fresh survey marks plastering the track around Port Junction. I don't know whether these marks were anything to do with overheads or tracks, but it makes me think that major upgrade works are in the pipeline - something to do with the Route 96 upgrade project? From the brief look at the marks (which were on the track surface but also in the grass next to the track), it looks like three tracks are planned through the area. The survey marks are also noticeable on Clarendon St.
Interestingly I also spotted survey marks around the Spencer St/Flinders St intersection - are there any plans to install North to West curves so that trams coming off Clarendon St can access Docklands?