NNSA Infrastructure Improvements Act of 2025

The NNSA Infrastructure Improvements Act of 2025 would require the Administrator for Nuclear Security (the head of the National Nuclear Security Administration, NNSA) to submit annual and future-year reports detailing investments, schedules, and workforce needs for “specialized infrastructure.” This infrastructure supports the nuclear stockpile, global security missions, and naval nuclear propulsion activities, including facilities that handle special nuclear materials, hazardous materials, non-nuclear components, assembled nuclear weapons, and related testing and laboratory capabilities. The bill codifies a 25-year roadmap framework (the Enterprise Blueprint) and directs ongoing congressional oversight by outlining a multi-decade investment view (5-, 6–15-, and 16–25-year horizons) with annual updates on cost estimates, schedules, and progress. Although it does not authorize new funding, it strengthens reporting requirements to ensure modernization aligns with mission needs and replaces facilities before failure, according to the bill’s findings. In short, the act aims to formalize and regularize long-range planning and transparency around NNSA infrastructure modernization, linking facility recapitalization to the needs of the nuclear stockpile, global security programs, and naval propulsion programs, while requiring detailed budgetary and schedule information for Congress over the short, medium, and long term.