In current law it is already fixed. When it runs out of bonds in the "trust fund," it will automatically decrease its payouts to become revenue neutral.
I'm not sure what I've said to suggest that I'd like to buy a bridge (presumably contained in a dry region of a landlocked state). The discussion is about fixes to a perceived problem, but the problem will fix itself if the legislature does precisely nothing. I expect it is easier to get it to accomplish nothing than to accomplish any particular other solution.