Personally, I think the Centrelink should be opened up to all traffic, perhaps with restrictions at peak times to prevent traffic issues on the Quayside.
Failing that, convert it into a cycleway to segregate Bradley Wiggins, his 200mph bike and pedestrians on the narrow riverside path, and reopen the Askew Road.
Go North East have no real use for it anymore, and there's clearly a need for it to be used as something else.
RE: Centrelink