Well, it seems to me that constructing bike lanes piece-meal as roads are re-built is the most cost-effective way to do it, even if it results in a super fragme

Well, it seems to me that constructing bike lanes piece-meal as roads are re-built is the most cost-effective way to do it, even if it results in a super fragmented bike lane network at first. As far as bike lanes across freeway entrance ramps goes, great, if it's done right. The bike lane should be painted solid green or red where it crosses the ramp, with a "Yield to " sign. The rebuilt interchanges in my city are like this, and the coloured lane is a visual obstruction that forces drivers to take notice of any cyclists on it. I've both cycled on and driven across these lanes, and they work well, far better than the alternative. Also, bike lanes on 55 mph roads is fine if there are no alternative roads for cyclists to use. Often, this just means paving a wide shoulder and putting regular "" signs as reminders to drivers. Even if only a few people a day ride it. Edit: it looks like the commenting platform strips out the "U+1F6B2 BICYCLE" character, used twice above.