More than half a billion dollars in spending is not keeping up with Minnesota’s need to repair and replace its deteriorating bridges. Minnesota has seen a bigger jump in the number of deficient bridges than all but a few other states, raising concerns about fixing them. Federal data show Minnesota has 1,191 troubled bridges, up 3.5% from 2011. Most are under county or local control but rely on state and federal funding for much of their maintenance and repairs. The Legislature in 2008 passed a gas tax increase that provides $866-million for bridge repair and replacement. Of that, $532-million already has been spent. That tax increase expires in 2018.