The Oregon Senate has taken a major step toward reshaping how the state pays for its roads, bridges, and transit systems. On Monday, lawmakers approved House Bill 3991 by an 18 to 11 margin, setting the stage for one of the most significant updates to transportation funding in more than a decade.
The legislation is projected to generate approximately $4.3 billion over the next ten years, largely through increases in existing taxes and fees. Its central aim is to address the growing costs of road maintenance and operations at a time when traditional revenue sources, such as the gas tax, are under pressure from rising fuel efficiency and the slow but steady growth of electric vehicle adoption.
Under the new framework, Oregon drivers would see a six-cent increase in the state gas tax. Vehicle owners would also face higher registration fees, with most nearly doubling from current rates. The measure also calls for doubling the state’s payroll tax that supports public transit, moving it from 0.1 percent of wages to 0.2 percent. Electric vehicles, which contribute less to the gas tax system, would be subject to separate fee increases designed to bring their contribution closer to that of gasoline-powered vehicles.
Lawmakers have described the measure as a necessary recalibration of funding sources rather than a dramatic policy shift. For decades, Oregon’s transportation system has relied heavily on gas tax revenue to cover the costs of paving, repairing, and maintaining thousands of miles of highways and county roads. As more efficient and alternative-fuel vehicles reduce fuel consumption, the state’s ability to sustain its infrastructure has weakened, creating shortfalls that cannot be closed without new revenue streams.
The bill’s passage comes after months of negotiation and debate about how best to balance the financial needs of transportation infrastructure with the economic pressures residents already face. The decision to increase fees and taxes was not made lightly, as it directly impacts households across the state. However, proponents argue that without substantial new revenue, Oregon risks falling behind on critical projects that ensure the safety and reliability of its roadways.
Beyond maintaining current operations, the legislation also seeks to stabilize funding for public transit agencies that serve urban and rural communities. Doubling the payroll tax is expected to strengthen transit systems that have faced rising costs and fluctuating ridership since the pandemic. Lawmakers believe this investment is essential for connecting workers to jobs, students to schools, and residents to essential services.
For drivers, the immediate impact will be most visible in the cost of filling up at the pump and registering vehicles. Over time, the state anticipates that the increased revenue will reduce the backlog of deferred maintenance, prevent further deterioration of highways and bridges, and create a more predictable funding base for future transportation planning.
The bill now awaits implementation, and attention will turn to how agencies allocate and manage the new funds. While questions remain about long-term solutions for a transportation system evolving with new technologies and environmental demands, House Bill 3991 marks a pivotal moment in Oregon’s efforts to keep its roads safe and its economy moving.

