Tonight, Caltrans will restripe the roadway at the Highway 101/ Old Redwood Highway Interchange in Petaluma in order to open new loop on-ramps to northbound and southbound 101. Weather permitting, new loop on-ramps will be open by 5 a.m. on Saturday morning.
For this stage of the interchange project, the traffic configuration will return to one stop light on each side of the interchange. All on-ramps and off-ramps will be open. This should greatly reduce the congestion that the construction has created at this interchange.