What is Reauthorization?
Federal surface transportation reauthorization is the process Congress uses to renew, fund, and update the programs that build and maintain the nation’s roads, bridges, transit, and multimodal networks. Reauthorization is one of the most important tools Congress has to shape national transportation policy. Typically passed every five to six years, these bills establish funding levels, define federal priorities, and guide how transportation investments are made. These decisions influence which types of projects are eligible, what outcomes are prioritized (such as safety, mobility, economic development, etc.), and how regions access and manage federal dollars.
For MPOs, reauthorization is a key opportunity to improve the funding and policy frameworks that impact day-to-day operations and long-term regional planning. It directly affects how MPOs are funded, how flexibly they can use resources, and how much authority they have in shaping transportation decisions for their communities.
With the current Infrastructure Investment and Jobs Act (IIJA) set to expire on September 30, 2026, the decisions made in the next year will define the future of transportation planning for years to come.
- New to the topic? Start with AMPO’s Reauthorization 101 guide.
- New to MPOs? Learn more in AMPO’s MPO 101 Primer.