FORT LEE - A new phase of a major construction project on the George Washington Bridge is underway, which can mean big headaches for those who depend on the bridge at night.

The upper level of the bridge will be reduced to one lane on the eastbound side during the overnight hours.

During the the week, the lanes will close as early as 9 p.m. and will reopen at 5 a.m. each morning. On Friday nights, the lanes will close at 10 p.m. and reopen for the weekend at 10 a.m.

Bridge work last summer caused delays of up to 75 minutes, according to the Port Authority.

Work will last approximately 12 weeks and will alternate between east and westbound sections. There will be no overnight work on the weekends.