Take another look at the book, every single bike lane is already seriously fading. You're not supposed to lay new streets. First of all, you can tear up single

Take another look at the book, every single bike lane is already seriously fading. You're not supposed to lay new streets. First of all, you can tear up single lanes, so no need to do the whole street. Secondly, you probably should already be tearing up a significant fraction in order to provide proper separation. But most of all, there is no need to replace them: just add the green dye when you're replacing them on their regular maintenance schedule.