The Wide Bay region will receive more than $35 million worth of upgrades on the Bruce Highway in south-east Queensland.
The Department of Transport and Main Roads says 12 new overtaking lanes will improve safety on danger zones between Maryborough and Childers.
The department's Bundaberg manager, Stephen Mallows, says the work needs to be done while there is funding available.
"While that will cause some frustration for motorists - because there will be that time when there will be the stop and slow, the traffic controllers and some interruptions or reduced speed zones - the way we'd like to look at it is because we do have that request to improve the Bruce Highway," he said.
"At this point in time we've got access to that funding."
He says motorists can expect delays for up to a year.
"There will definitely be the need to have interruptions to traffic while we build the works, so there will be some delays for sure," he said.
"We'd like to think that they're in the order of maximum five to 10 minutes.
"What people would expect is that when they're travelling the highway, they'll come to a queue of traffic.
"They might have the traffic controller there that will temporary stop the traffic while they're strengthening the road or the widening works. because we need to make sure it's safe for the road workers as well."