MIAMI — Miami’s love affair courthouses is costing taxpayers a bundle.

Not only does it cost a fortune to build a new courthouse, the cost of maintaining the structures they replace is eye-popping.

In 2008, the historic David W. Dyer Federal Building and U.S. Courthouse on First Avenue was left for dead when it was replaced with the Wilkie D. Ferguson U.S. Courthouse, a modern version located next door.