I would convert one of the bridges into a busway (effectively duplicating the busway between Roma Street and Wooloongabba) to allow extra capacity to cater in a future metro to the Redlands. This busway could include stops at QUT Gardens Point, Queens Wharf and North Quay. Meanwhile the other bridge I would pedestrianise, have cycle lanes, have some markets there and also put gardens in something like New Yorks High Line. Would also be another great spot to watch river fire from.