The Highway Trust Fund

The Highway Trust Fund is a dedicated source of federal funding in the United States used to finance transportation projects like highways, bridges, and public transit. It primarily derives its revenue from federal gasoline and diesel taxes paid by motorists. These funds are allocated to state and local agencies to maintain existing roads, build new infrastructure, and improve transportation systems. The fund helps ensure consistent financing for transportation infrastructure, which is vital for economic activity and safety. However, it often faces challenges when revenues fall short of spending needs, requiring Congressional adjustments or additional funding sources.