Like the 710 freeway? https://www.latimes.com/california/story/2021-05-22/710-free...
Elsewhere the US continues build tons and tons of roads. According to the Bureau of Transport Statistics the US highway system went from 4,050,717 miles in 2009 to 4,171,125 miles in 2019. This is a delta 120,408 miles, or an increase of 2.9%.
The 710 might be an interesting example, but it's not exactly indicative of a trend.