Although substantial improvements have been made to U.S. infrastructure over the last four years, the American Society of Civil Engineers (ASCE) warns that more will be needed in the coming years.

Every four years, the ASCE puts out a report card grading the country's various infrastructure systems, including ports, rail, public parks, roads, wastewater treatment, transit and more. In the latest iteration released on March 25, the report gave the U.S. a middling "C" grade, lauding the investments made by the Biden administration with the passage of the Bipartisan Infrastructure Act in 2021, but expressing concerns over how many of those investments have been put on hold in recent months by the Trump administration.

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Scoring the highest individual grades were ports and rail, which received a B and B-minus respectively. On the lower end, stormwater and transit each received a D, while roads, schools, wastewater, dams, aviation and energy all got a D-plus. Over the course of Biden's presidency, U.S. ports received billions in federal funds for improvement projects, new equipment and other various modernization efforts. Biden's Department of Transportation also handed out $2.4 billion for rail safety and infrastructure projects in 41 states. 

"Recent federal and state investments have had a positive impact, but the full force of increased funding will take years to realize," the report reads. "Considering the extensive time it takes to study, design, and complete projects, sustained investment at current or higher funding levels will be necessary for infrastructure to continue to improve."

The ASCE also highlighted how aging infrastructure systems have become "increasingly vulnerable" to natural disasters, all while climate change has driven an increase in extreme weather events. In order to safeguard those systems, the group recommends further investments in resilient infrastructure built to withstand intense hurricanes, flooding and wildfires, and adopting "up-to-date codes and standards" to help communities hit by disasters deploy public resources.