On Thursday morning, Caltrans will open a new temporary configuration for the northbound and southbound off-ramps at the Old Redwood Highway interchange at Highway 101.

Drivers should be aware that when they are exiting the freeway at Old Redwood Highway, they will have to choose the left lane or right lane as soon as they begin to exit. The lanes will be at different heights, and once a lane is entered, it will not be possible to switch lanes.

This week there will be temporary closures of off-ramps while the contractor prepares for the new stage of construction.
• The northbound Highway 101 off-ramp to Old Redwood Highway will be closed tonight from 10 p.m. to 5 a.m.
• The southbound Highway 101 off-ramp to Old Redwood Highway/Petaluma Boulevard North will also be closed tonight from 10 p.m. to 5 a.m.

These closures depend on weather conditions and will be rescheduled if necessary. For information about this and other projects, go to www.dot.ca.gov/dist4 and click on “Projects” and “Sonoma County.”

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