About 50,000 trucks a day will traverse heavily-used segments of the interstate highway system in the US by 2035, according to a new report.

The American Association of State Highway and Transportation Officials (AASHTO) report said that in 20 years the average number of trucks travelling some portions of the interstate will increase from 10,500 to 22,700 a day.

The report also shows that although between 1980 and 2006 traffic on the interstate highway system increased by 150%, interstate capacity increased by only 15%.

The US states of Pennsylvania, Arkansas, California, Georgia, Tennessee and Texas are expected to collectively account for 88% of the most heavily used truck routes.

The AASHTO report entitled ‘Unlocking Freight’ also identified 1,000 miles of the most heavily travelled highways used by trucks, highlights key projects in 30 states, which will improve freight delivery and dependability and offers a three-point plan to address the issue.

The plan is intended to relieve freight congestion, generate jobs and improve productivity.