As it was “not realistic”, the owner of the World Trade Center has abandoned the timetable for rebuilding work at the site of the 9/11.
A dozen issues which had slowed work and raised costs have been listed over by Christopher Ward, Port Authority of New York and New Jersey executive director.
In September, new dates are expected to be issued for the completion of a memorial, skyscrapers and a transit hub.
Will the centrepiece Freedom Tower be scaled back remains unclear.
After being scheduled for completion in 2006, then 2011, now the lastest estimate is 2013, for the tower planned as a replacement for the destroyed Twin Towers.
At 1,776ft (541m) it would be the tallest building in the US.
“The schedule and cost estimates of the rebuilding effort that have been communicated to the public are not realistic”, said Mr Ward in a report to New York governor, David Paterson.
He said that by the end of September, new “clear and achievable timelines” would be set by developers and government agencies.
Referring to them as “emotional dates”, Mr Ward also said that in the wake of the 9/11 attacks, the earliest rebuilding estimates were not truthful.
The deadlines for the redevelopment work have been moved several times.
As commodity prices soar and developers and government agencies wrangle over site plans, the project’s initial $14bn budget has continued to rise.