Now, after 70 interviews and at least $1 million in legal fees to be paid by state taxpayers, that review is set to be released, and according to people with firsthand knowledge of the inquiry, it has uncovered no evidence that the governor was involved in the plotting or directing of the lane closings.
But lawyers from the team who led the inquiry are prepared to vigorously defend their work, which they described as an unfettered look into the inner workings of an administration known to prize loyalty and privacy.
Randy M. Mastro, the lawyer leading the internal investigation, said that the level of cooperation from Mr. Christie’s office and the volume of records reviewed had allowed investigators to resolve the most pressing questions to arise from the scandal. The governor himself handed over his iPhone and telephone records and allowed the lawyers to search his government and private email accounts.
“At the end of the day, we will be judged by whether we got this right,” said Mr. Mastro, who called the review “comprehensive and exhaustive.”
Much about the review remains secret, and Mr. Mastro declined to describe any specific content before its release. But it is expected to lay out a detailed narrative of the events, motivations and communications leading up to the closing of the lanes, which snarled traffic in Fort Lee, N.J., for thousands of commuters last September.
According to those familiar with the report, it will also address what and when Mr. Christie and his aides knew about the lane closings; analyze the structure, practices and culture of the Christie administration that contributed to the scandal; and issue pointed recommendations to prevent such conduct.
It is not known whether the investigation resolved the crucial issue of whether Mr. Christie created or condoned a culture that fostered political intimidation.