They are set to continue until spring 2023, although Lancashire County Council hopes problems will ease as motorists get used to the diversions and closures.
Our pictures below from photographer Neil Cross show the extent of the issues in the city centre however.
Read our report on the opening day of the roadworks HEREWant to see fewer ads? Subscribers to the Lancashire Post get access to the ad-lite version of our website, which features 70% fewer ads and faster load times for a better experience. Find out more
Read our report on the opening day of the roadworks HEREWant to see fewer ads? Subscribers to the Lancashire Post get access to the ad-lite version of our website, which features 70% fewer ads and faster load times for a better experience. Find out more