A report card from an engineering group found that American roads, ports and other infrastructure got better last year but could be hurt if federal funding is reduced.

Increased federal spending in recent years has helped to improve U.S. ports, roads, parks, public transit and levees, according to a report released on Tuesday by the American Society of Civil Engineers.

But that progress could stagnate if those investments, some of which were put on hold after President Trump took office in January, aren’t sustained.

Overall, the group gave the nation’s infrastructure a C grade, a mediocre rating but the best the country has received since the group’s first report card in 1998. Most infrastructure, including aviation, waterways and schools, earned a C or D grade; ports and rail did better. The group also projected a $3.7 trillion infrastructure funding shortfall over the next decade.

“The report card demonstrates the crucial need for the new

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