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
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Lancashire County Council hope the delays will ease in the coming days as drivers get used to the roadworks.
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Drivers caught up in the mayhem on Monday were unhappy at the prospect of having to suffer the same for almost two months.
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The Friargate North and Ringway project is one of the first schemes in Preston paid for by Government money from the Transforming Cities Fund.