Monday, April 18, 2016

SR 12/121 Sonoma County-Roadway Repairs April-June 2016

State of California • Department of Transportation


Date: April 13, 2016
District: 4 - Oakland
Contact: Allyn Amsk
Phone: (510) 286-5445


Roadway Repair Project Begins on State Routes 12/121

Sonoma County – Caltrans is starting a retaining wall project on State Routes 12/121 east of Schellville, between Ramal Road and Napa Road.

• For the first week of construction, beginning Monday night, April 18, there will be one-way reversible traffic control, Monday night through Friday night, from 7 p.m. to 6 a.m.

• On Sunday, April 24, the work schedule will change, and there will be one-way reversible traffic control, Sunday night through Thursday night, from 7 p.m. to 6 a.m. This work schedule is expected to continue for the duration of the project.

• Work will continue into late May or early June 2016.

This night work involves installing 31 steel soldier piles (33 ft. 8 in. long) into 24 inch diameter drilled shafts that will be backfilled with concrete. Residents should expect to hear increased noise from heavy construction equipment and back-up alarms.

Please drive cautiously through the construction zone, follow the direction of flaggers, leave a safe traveling distance between your vehicle and the vehicle ahead of you, and “Slow for the Cone Zone.”

For information about Caltrans projects in Sonoma County, visit our website at


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