$8 million later, Key Biscayne faces Big Dig aftermath

$8 million later, Key Biscayne faces Big Dig aftermath

The Big Dig died Wednesday night, but the end of a mammoth effort to replumb the island in a fight against climate change has left a daunting and costly set of challenges ahead with no clear roadmap as seas continue to rise. The decision means at least $8 million in sunk costs without a shovel ever hitting the ground, officials said.   Mayor Joe Rasco, who will see a campaign promise go uncompleted, warned the decision may wind up costing reside…