Caltrans has scheduled temporary closures of U.S. 101 at the Old Redwood Highway interchange in Petaluma between midnight Friday, Nov. 22, and 6 a.m. Saturday, Nov. 23. Northbound and southbound lanes will be closed for about 15 minutes at a time while crews adjust the temporary structure beneath the new overcrossing bridge. During those times, traffic will be detoured.

The northbound and southbound on-ramps also will be closed at various times between 10 p.m. and 6 a.m.