A section of Tritton Road, Lincoln, will become a single lane while maintenance work is done to a bridge on the city road.
The bridge over Catchwater Drain, in between the Skellingthrope Road junction and Dixon Street junction, is 50-years-old and needs structural maintenance and repairs to bring it up to standard.
The work will begin on Monday, July 28, and is expected to finish by September 25.
Lincolnshire County Council contractors will install new safety barriers, waterproof the bridge deck, and lay a new road surface.
Throughout the work, a section of Tritton Road around the bridge will be just one lane, managed with two-way temporary traffic lights.
Dave Underwood, principal highways officer at Lincolnshire County Council, added: “National Grid is currently working on Newark Road to replace a gas main, so there will be temporary traffic lights on both roads at the same time.
“Usually we wouldn’t permit this but because we’re in the summer holidays it shouldn’t cause undue disruption.
“We’ve already seen a significant reduction in the amount of traffic on the roads this week, and we expect that to reduce even more after the school term finishes.”