Joe Lhota plans to make his run official.
The number of stalled construction sites in the city rose 17 percent since February, analysis shows.
Construction jobs were the lowest since 1999, but wages will soon top $70K, a report said.
Construction spending and jobs are expected to remain down through 2013, the New York Building Congress reported.
Port Authority executive director Chris Ward said lower toll hikes will mean fewer infrastructure improvements and that New Yorkers need to invest more in their future.
A crane operators strike would have impacted major construction projects across Manhattan.
The New York Building Congress said in a statement Thursday that "a strike appears imminent."
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