Police closed the busy A660 on Friday after a collision between a car and a tractor at the Dyneley Arms crossroads on Pool Bank.
Tailbacks of traffic built up in both directions.
The crash happened shortly after 7.30am on Leeds Road, near the junction with the A658 Pool Bank and Harrogate Road.
Yorkshire Ambulance Service sent a rapid-response vehicle and ambulance to the scene and a woman was taken to Leeds General Infirmary. She is not thought to have suffered serious injuries.
The road reopened at about 9am.