Closing it is obviously the best solution, but in lieu of that, there's probably enough space to narrow the road and create a bit more of a right-angled junction. You could also then consider signalising it, with separate lights for the bike lane & pedestrian lights too (sorely needed.)
Another alternative would be closing the ramp but making the exit road two-way with a signalised junction to get the traffic across to the right side of the WAR. I wonder how structurally sound the ramp is by now anyway? Pretty sure that road was done very much on the cheap.