US HB6435

Defines "megaproject" as any transportation project with estimated total cost of $2.5 billion or more receiving federal financial assistance under Title 23

Requires recipients to submit a comprehensive risk management plan before construction authorization, including processes for identifying cost overruns, project delays, and quality reductions, plus commitments to regularly update cost estimates and maintain financial reserves

Mandates establishment of a peer review group of at least 5 experts (including one with project management experience) within 90 days of construction authorization, with members prohibited from having financial interest in the project

Requires transparency measures including publishing supervising engineers' names and license information on recipient websites, along with peer review reports within 90 days of submission

Directs the Secretary of Transportation to arrange with the Transportation Research Board to convene a megaprojects committee within 180 days, which must submit a report to Congress within 3 years reviewing foreign experiences (particularly UK and France) and recommending changes to federal oversight approaches