A start date for construction of an upgrade to the Sunshine Coast rail line has been announced after the state government committed $160 million in funding as part of the Queensland budget, due to be delivered in full on Tuesday.

The advocacy group which has campaigned for this work for nine years, since Labor first announced the planned upgrade in 2009, said "it's about time" and believe the upgrade will benefit the Sunshine Coast in ways never seen before.

Deputy Premier Jackie Trad has jumped on board the Sunshine Coast rail upgrade and ended locals' nine-year wait. Credit:Darren England - AAP

Deputy Premier Jackie Trad and Transport and Main Roads Minister Mark Bailey announced funding for the Beerburrum to Nambour Upgrade on Saturday, which means more than $550 million in funding has been promised for the project, when factoring in the federal government contribution.

The project will see the duplication of about 20 kilometres of North Coast Line between Beerburrum and Landsborough, as well as the construction of more 'park and rides' and extra passing points.