Officials in the Florida Keys announced what many coastal governments nationwide have long feared, but few have been willing to admit: As seas rise and flooding gets worse, not everyone can be saved. And in some places, it doesn’t even make sense to try. On Wednesday morning, Rhonda Haag, the county’s sustainability director, released the first results of the county’s yearslong effort to calculate how high its 300 miles of roads must be elevated to stay dry, and at what cost. Those costs were far higher than her team expected — and those numbers, she said, show that some places can’t be protected, at least at a price that taxpayers can be expected to pay. “I never would have dreamed we would say ‘no,’” Ms. Haag said in an interview. “But now, with the real estimates coming in, […]