More than 800 people have lodged compensation claims over the impact of the Weymouth relief road on their property value.
Dorset County Council has so far paid out more than £2 million to householders, including single payments of £30,000 for some properties directly next to the £89m road.
300 of the 800 claims have been agreed.
Claims have been made for the effects for such elements as increased noise, vibrations from traffic and air pollution.
Miles Butler from the County Council spoke to ITV News West Country: