Highway 101 will be down to one lane in each direction tonight and Friday night in Rohnert Park for the removal of construction debris — if the rains allow.

Caltrans spokesman Bob Haus said the lanes will be closed 11 p.m. to 5 a.m. each night from Santa Rosa Avenue to Rohnert Park Expressway. He said he expects the work will happen unless it rains hard like last weekend. If it does, the work will be postponed.

Haus also said the project there is on track to finish as scheduled in 2012.