The preferred option will see the A548 upgraded, with a new road linking the A55 and A548 just after the Flintshire Bridge.
It forms part of over £650m of Welsh Government infrastructure improvements in North Wales, with Deeside in particular benefiting from Welsh Government investment.
Economy and Infrastructure Secretary Ken Skates said: “I’m delighted to announce the red route as my preferred option to address the congestion problem in the Deeside Corridor, A55/A494/A548, area.
Further details can be found on the Welsh Assembly Government site.