Government funding for highways in the US - Data and Analysis (1980-2031)

In 2025, government funding for highways in the United States is estimated at $243.4 billion, marking an increase of 6.5% from the previous year. This increase is largely due to the distribution of funds included in the Infrastructure Investment and Jobs Act. Persistent growth in the number of vehicles on the road and the amount of time Americans drive continues to place heavy demand on the nation's infrastructure, prompting federal and state governments to bolster their investments in road maintenance and construction. Meanwhile, escalating state tax receipts, underpinned by rising aggregate incomes, consumer spending, population growth and upward-trending tax rates, have established a robust fiscal foundation for expanded highway spending.Between 2020 and 2025, highway funding experienced volatility, influenced by economic recovery efforts and the broader impacts of the COVID-19 pandemic. Federal spending packages, including the Consolidated Appropriations Act of 2021 and the Infrastructure and Jobs Act of 2021, provided timely boosts to highway outlays. These measures ensured continuity in project execution and system maintenance despite lingering disruptions to traffic patterns and pressures on public budgets. Real spending growth was muted by accelerating inflation in recent years.As the number of cars on the road and the amount of time Americans spend driving have increased, the strain placed on the nation's infrastructure has also risen. Therefore, federal and state governments have steadily increased their spending on maintaining and building roads. Burgeoning state tax receipts also has made higher funding possible as aggregate incomes, spending, populations and tax rates have trended upwards. However, this close link with tax receipts has made highway funding growth responsive to economic conditions and unemployment. The necessity of subsidizing the Highway Trust Fund, primarily via federal support, has highlighted the ongoing vulnerability of highway funding to shifts in gasoline tax revenues and broader economic trends. Despite periodic increases in spending, real-term gains have yet to match the overall economic growth rate, indicating a persisting gap between infrastructure needs and allocated resources.