Saturday, April 4, 2015

State Route 128-Sonoma County-Big Rig Restriction Begins April 13

State of California • Department of Transportation


Date: April 2, 2015
District: 4 - Oakland
Contact: Allyn Amsk
Phone: (510) 286-5445


State Route 128 Slope Protection Projects
UPDATE: Big Rig Restriction Begins on Monday, April 13, 2015 at 7 a.m.

SONOMA COUNTY – Construction signs have been installed for a slope protection project on State Route 128/Oat Valley Road. The project is located two miles west of the three-way intersection of North Cloverdale Boulevard/ North Redwood Highway/Oat Valley Road, and approximately 1.8 miles east of the Mendocino County line. Construction will continue through October 2015.

Construction Details
• Ground-breaking activities are expected to begin the week of April 6, 2015. Please be alert for construction workers and follow the directions of flaggers.
• One-way reversing traffic control will be in place during this project, and motorists should expect delays when traveling through the construction zone.
• Big Rig Restriction: Starting on Monday, April 13 or soon after, the width of SR-128 roadway will be temporarily reduced at a hair-pin curve so big rigs will not be able to travel through the construction zone.
o The segment of SR-128 between N. Cloverdale Blvd and SR-253 will be closed to big rigs and vehicles over 30 feet in length. Exception: this restriction will not apply to logging trucks.
o Portable changeable message signs (PCMS) will be in place one week prior to alert drivers regarding the closure for big rigs.
o Detour: Big rigs will be detoured to State Route 253.
o See detour map for more information.
o The restriction will be in effect for about two months or less.

A second slope protection project will begin in May 2015, approximately 2.4 miles east of the Mendocino County line. This project will not have a big rig restriction, but the restriction will remain in effect until the completion of the previously mentioned project.

If this work is delayed due to weather conditions, it will be rescheduled for a later time. Please drive cautiously through the construction zone, leave a safe traveling distance between your vehicle and the vehicle ahead of you, and Slow for the Cone Zone.

For more information, visit the website at or follow us on Twitter: CaltransD4 @Sonoma101.

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