The Hume Highway has been been reopened after an earlier truck rollover east of Yass which saw traffic heading from Sydney to Melbourne diverted through Canberra for more than 12 hours.

The male driver was treated for minor injuries after his B-double truck rolled shortly after midnight on Friday at Mundoonen, about 25 kilometres east of Yass.

The highway was reopened shortly after 4pm on Friday.

The highway was closed to southbound traffic, forcing drivers heading south to divert down the Federal Highway to Canberra and back up the Barton Highway to Yass, adding at least 45 minutes to travel times.

The diversion was in place until about 12.50pm on Friday, when one southbound lane was reopened after a lengthy clean up operation due a diesel spill.

Earlier in the day a NSW Transport Management Centre spokesperson said specialist equipment had to be brought in after the “quite large” spill, meaning road service repairs would likely be needed.