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In 2021, about 41% of federal transportation and infrastructure spending was on highway transportation and 32% was on air travel. The remainder was for rail and mass transit (19%) and water (8%).

Transportation funding remained elevated in FY2021 after increasing 50% in FY2020 because of COVID-19 pandemic stimulus. Eighty-one percent of pandemic transportation stimulus funds were budgeted for air carriers, airports, and transit agencies.


Most transportation and infrastructure spending comes directly from state and local governments, which spent $191.1 billion on projects in 2019, excluding federal transfers.

The federal government spent $71.3 billion directly on infrastructure in 2021 and transferred an additional $81.7 billion to states. ​

Congress passed and President Biden signed the Infrastructure Investment and Jobs Act in November 2021. The bill allocated $550 billion in new spending, spread out over five years, to rebuild roads, bridges and rails, airports, provide high-speed internet access, and address climate concerns. ​


Air travel rebounded in 2021 but is below 2019 pre-pandemic levels, with the number of scheduled flights down 20% in the first eleven months of the year.

The percentage of canceled flights was about 5 percentage points lower than in 2020 and less than 1 percentage point lower than in 2019​.


Public rail transit ridership in October 2021 was 67% higher than October 2020 levels.

Public rail transit rides have yet to recover from the effects of the COVID-19 pandemic, however, as they are about 49% below November 2019 levels.


There are 618,456 bridges in the US and their condition is improving.

The proportion of bridges rated as poor decreased from 9.4% in 2012 to 7.3% in 2020. ​


Conditions of urban interstates, mid-sized, and minor roads have improved since 2000.

Rural minor roads have also improved, but the conditions of interstates and mid-sized roads in rural areas have remained the same or deteriorated over the period.


Train infrastructure is degrading.

Nearly two-thirds of train tunnels and about one-third of train control systems and elevated structures rated as poor or substandard as of last count.

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