BRADENTON, Fla. - The Florida Department of Transportation has set Thursday as the ultimate deadline for financial close on the state's most unique public-private partnership - the $1 billion Port of Miami Tunnel Project. But late last week several FDOT letters to Miami officials placed in doubt, once again, whether the nation's first P3 based on availability payments would come to fruition.

"As I warned last night, the city is threatening the success of this project," FDOT assistant secretary for engineering and operations, Kevin Thibault, said in a letter Friday to Miami Mayor Manny Diaz.

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