there was 7 to 10 inches of ice at Potash Bay & Tri-Town yesterday, so I expect at least as much as you go south closer to the Crown Point bridge. Ice was walkable - some drifted snow but not too deep, some bare ice.
I wouldn't go on the ice at Arnold Bay or Button Bay. Potash Point seems to be the northern extent of fishable ice. There were large patches of open water just outside the inner bays at both Arnolds and Button and possibly with cold temps last night there now is a thin cover of ice so it might seem safe at first but can get very thin suddenly.
good luck !
