WASHINGTON (AP) — Six years ago the Social Security Administration embarked on an aggressive plan to replace outdated computer systems overwhelmed by a growing flood of disability claims. Nearly $300 million later, the new system is nowhere near ready and agency officials are struggling to salvage a project racked by delays and mismanagement, according to an internal report commissioned by the agency.

In 2008, Social Security said the project was about two to three years from completion. Five years later, it was still two to three years from being done, according to the report by McKinsey and Co., a management consulting firm.