Miami-Dade commissioners will decide today if a $540 million proposal to replace the historic Dade County Courthouse will go on the November ballot.

Miami-Dade's civil court caseload has long outgrown the 90-year-old courthouse, which is also plagued by structural problems such as corroded columns and a flooded basement. Several upper floors cannot be accessed for safety reasons.

The county is looking at a handful of downtown sites for a new civil courthouse, such as a plot of land near the new juvenile court and a space at the proposed All Aboard Florida train station. The old courthouse, which was added to the National Register of Historic Places in 1989, will be repurposed, likely into a hotel or a museum.