Residents and businesses are celebrating the completion of a $1.65 million project to seal Lyndoch Road.
The completion of the previously unsealed road will reconnect the southern Barossa with Gomersal Road, with locals hoping the safer, smoother and more direct road will drive more economic growth to their region.
"With the advent of Gomersal Road, much of the traffic that used to enter the Barossa Valley via Lyndoch and WIlliamstown were bypassing and going straight up Gomersal Road and into Tanunda," Southern Barossa Alliance deputy chair Steve Balch said.
"(Lyndoch Road) is really a vital link to bringing traffic back to southern Barossa."
Schubert MP Stephan Knoll last year said the new sealed road would begin to repair the negative impact on businesses.
"Anecdotally, these local businesses have suggested a decrease in business of up to 30 per cent," he said.
"I am very excited to finally see this project come to fruition.
"This work will not only make Lyndoch Road safer for motorists, it will serve a broader strategic purpose in connecting the Southern Barossa to visitors to the region who travel via the Sturt Highway and Gomersal Road."
Business owners thanked Stephan Knoll MP for "getting the ball rolling" after his $500,000 state election promise in 2018.
The joint council, state and federal government project was slated to be finish by the end of 2019.