Drove through there last weekend. They've basically just closed off the two intersections with barriers like the Calder intersections. I didn't notice any "ramp" in place, it's basically just the same intersection with right turns banned.
But they didn't close the right turn to Rockbank Nursery or any of the right turns in Rockbank township itself, which I'd have thought would be higher priority in terms of traffic movements. How hard would it be to also make Troups Road LILO and build a service road for local Rockbank traffic directing them to the Leakes Road overpass? Seems weird to me.
How much does an interchange cost? All these piecemeal "low cost" improvements on the Western, Calder, and Hume....at some point surely you have to bite the bullet and convert to full freeway conditions?