It doesn't have to be expensive, just trim cut-thru car traffic out of segments of the 10x-redundant carway network until there's finally 1.0+ bikeway network that actually works for kids riding to school, moms biking to groceries and errands, grandmas on trikes, bankers on the way to a meeting, and whatever other "indicator species" you can imagine of biking-as-normalcy that's missing from the current ridership.