A report by the Major Projects Authority will reveal Government troubleshooters’ concerns about multi-billion pound projects like the Universal Credit welfare reform and the HS2 rail link.
Government sources said that the MPA will show that management of big projects has improved significantly since 2010, when two-thirds of programmes were in trouble.
But the report, expected later this month, will confirm that Whitehall "still has a long way to go” to improve its handling of major projects, a source said.
The plan to disclose details of the Major Projects Authority’s work follows a lengthy internal struggle between ministers and civil servants about the disclosure of problems with big Government schemes.
Some ministers are privately concerned that civil servants are bad at managing big, expensive projects but repeatedly cover up their failings and refuse to tell ministers about problems.
Disclosing "candid” assessments about big projects will improve management, ministers believe.
The MPA scrutinises Government projects worth more than £50 million and more, overseeing a portfolio of more than 150 projects across Whitehall.
Among the projects it studies are the Universal Credit and major defence procurements like the purchase of new aircraft carriers for the Royal Navy.
Under a new publication scheme that will start later this month, each of those projects will be publicly rated red, amber, or green.
Green will indicate a project that is running well and on time. Amber shows problems in need of attention, and red shows a project at significant risk of failure, delay or overspend.
Each Whitehall department will also be told to publish details of its major projects every six months, including the red-amber-green ratings and the data behind them.
Ministers are braced for embarrassment when some projects are revealed to have poor ratings, but insist that public scrutiny will ultimately lead to improvements.
A Coalition source said: "Let's be honest: releasing a candid report about Whitehall's major projects is a big and brave step for Government. But hard working people expect us to ensure every taxpayer pound is spent judiciously and that's just what we are determined to do. Labour had 13 years to deal with these issues but did nothing".