A salvage operation is under way after a B-double carrying about 30 tonnes of cheese rolled on the Hume Highway near Goulburn, blocking both northbound lanes.

Emergency services were called to the crash, south of Breadalbane, about 8.10am on Friday.

A truck carrying cheese has overturned on the Hume Motorway near Goulburn. Credit:NSW Police

A NSW Fire & Rescue spokesman told Fairfax Media multiple crews attended due to a minor diesel spill during the crash.

"Work is under way at the moment to remove the cheese and salvage the truck," the spokesman said.