The Causeway was originally built to serve a new residential community that became Key Biscayne.
Today, it's seen as a cash-cow for the county and damn the consequences.
Last week I tried to leave the Key just after dark and there were two huge events going on, one on each side of the Causeway. It took, normally a 20-minute drive, almost 2 hours, inch-by-inch for the entire 5-mile distance.
And it looks like it's going to get worse.