Two years and $57 million later, the reconstruction of the highway through Cunningham's Gap on Queensland's southern Darling Downs is complete.
Work began to repair the Cunningham Highway in 2010 after widespread rain and localised flooding but the project was hampered by major floods last year.
Warwick Chamber of Commerce and Industry president David Littleproud says it has been a long time coming.
"Obviously it's a welcome development as it underpins the economic development and prosperity of Warwick, as well as a lot of communities right through the Southern Downs into northern New South Wales," he said.
"It's a major arterial from Brisbane to Sydney, so it's a major development and it's been long overdue." Mr Littleproud says project has caused some headaches for the local economy.
"It's changed some of the habits of some of the travelling public in looking for different arterials down through New South Wales," he said.
"That impacted from the small cafe owners through to the large trucking companies that we have in Warwick.
"These sort of impacts tear away at the business people's pockets in Warwick and the Southern Downs."