Cumberland Council is improving the water drainage system on the A591 near Thirlmere.
Officials said the work is needed to help keep the road safe and clear of standing water.
The A591 alongside Thirlmere frequently experiences issues with water from the nearby fells.
It can lead to a build-up of water and debris between the edge of the carriageway and the rock face, creating difficulties for the council’s highways team in terms of cleaning and maintenance.
The work is expected to continue until approximately Friday, August 11. The teams working on the project are completing around 60 metres of work per week. As the work progresses, each section will be completed under a moving traffic management system.
Councillor Denise Rollo, Cumberland Council’s executive portfolio holder for sustainable, resilient and connected places, said: “I am delighted that the culverts on the A591 are getting repaired and maintained this year, and we have plans to do the same in 2024.
“This demonstrates the council’s commitment to ensuring the safety and functionality of the roadways so that our network is safer for the driver, and more reliable for people to travel on. Thank you to the residents, businesses and visitors for their patience and support while we carry out this necessary maintenance works.”