Oregon adopted the first U.S. state gasoline tax, set at 1 cent per gallon. The new tax linked road funding to road use, creating an early "user pays" model that other states quickly copied. This state-level shift set the stage for later, larger fuel-tax highway funds.
Congress required each state to designate up to 7% of its road mileage as a federal-aid system, split into primary and secondary routes. This policy narrowed where federal highway dollars could be spent and strengthened the program’s planning and oversight. It helped make highway funding more systematic—an important step before dedicated fuel-tax “funds” became common.
After states certified their total road mileage, the Bureau of Public Roads completed the initial designation process and published a national map of the Federal-Aid Highway System. The defined network helped align federal spending with an agreed set of routes and priorities. It also reinforced the idea that highway money should follow a planned system, not scattered projects.
To raise money during the Great Depression, Congress imposed the first federal gasoline tax at 1 cent per gallon. The tax began as a general revenue measure, not a dedicated highway fund. Still, it established the federal gasoline tax as a major policy tool that later became central to highway finance.
During World War II-era fiscal policy, the federal gasoline tax shifted from a temporary measure toward a permanent feature of federal finance. This permanence mattered for highways because it made fuel taxes a stable, recurring revenue source. That stability later supported the move to dedicate (earmark) fuel taxes for highway programs.
Congress authorized designation of a National System of Interstate Highways of up to 40,000 miles. The act did not create a special, dedicated funding stream to build it. This gap between ambition (a national expressway network) and financing (no dedicated fund) shaped later debates over fuel-tax funding.
Congress temporarily increased the federal gasoline tax to help finance the Korean War period. Although this change was not primarily about highways, it showed that fuel-tax rates could be adjusted to match national funding needs. That flexibility became important when policymakers later tried to match highway spending to dedicated revenues.
The Federal-Aid Highway Act of 1956 created the Highway Trust Fund (HTF) and tied it to a package of highway-user taxes, including raising the gasoline tax to 3 cents per gallon. The HTF was designed as a dedicated funding mechanism to support Interstate construction and other highway projects. This was the major turning point from general fuel-tax revenue to a dedicated highway fund.
Congress increased the federal gasoline tax from 3 to 4 cents per gallon, strengthening revenues credited to the Highway Trust Fund. The change responded to early funding stress as Interstate construction ramped up. It also reinforced the pay-as-you-go approach: raising user-tax revenue to support planned highway spending.
The Federal-Aid Highway Act of 1961 continued the 4-cent-per-gallon rate and adjusted other highway-user taxes to increase Highway Trust Fund revenues. Federal officials described these changes as necessary to keep the Interstate program on track for the original completion date of 1972. The act shows how fuel-tax policy and the trust fund were used to manage long-term construction commitments.
As urban impacts and transportation needs changed, Congress debated whether Highway Trust Fund resources should support more than highway building. The 1973 act reflected these tensions by expanding flexibility and policy discussion around highway versus transit priorities. Even where changes were limited, the period marked a shift: highway funding was increasingly debated as part of a broader surface-transportation system.
By 1980, the Highway Trust Fund model—fuel taxes and other user taxes dedicated to federal highway programs—was well established, but the federal gasoline tax rate remained at 4 cents per gallon, unchanged since 1959. Over the 1970s, inflation and rising construction costs strained the purchasing power of those revenues, increasing pressure for later policy changes. This period closes the 1920–1980 story with a stable but stressed fuel-tax trust-fund system poised for the major 1982–1983 increase and creation of the Mass Transit Account.
Creation and evolution of fuel-tax highway funds in the United States (1920–1980)