If your commute involves crossing the Harbor Bridge --prepare for delays.
Starting at 9 a.m., the northbound --outside lane-- will be closed until 4 p.m. Some downtown access ramps will be closed as well. Tuesday, the southbound --outside lane-- will be closed as well during the same time period. The southbound 181 access ramp on North Beach will be closed at this time as well. Workers are repairing lights.