State Highway 70 Safety Improvement Project

Project Facts


The California Department of Transportation (Caltrans) is proposing a safety improvement project on State Route 70 (SR) in Yuba County near Marysville between Laurellen Road and the South Honcut Creek Bridge. The project need is based on a Traffic Accident Surveillance and Analysis System (TASAS) Report for the 3-year period between August 2010 and August 2013. This segment of SR 70 has had 85 reported collisions: including 7 fatalities, 32 reported injury accidents and the remainder being property damage only accidents. The number of fatal collisions along this section of highway was 3.8 times higher compared to the statewide average, qualifying this location for safety improvements. The proposed improvements are expected to reduce the collision rates at this location. Within the project limits there are: 136 driveways, 11 county roads, 7 private roads, and 22 farms/businesses. The school buses stop 26 times along SR 70 throughout the area to pick-up and drop-off school children.

Project Benefits

The location of the project is in Yuba County between Laurellen Road and the South Honcut Creek Bridge, Post Mile (PM) 16.2/25.8 (9.6 miles), work includes:

  • Widening and paving shoulders a minimum of 8’ in each direction
  • Providing a continuous 14’ two-way left-turn lane (TWLTL)
  • Providing a 20’ Clear Recovery Zone (CRZ)*
  • Providing passing opportunities
  • Providing truck acceleration and deceleration lanes for agriculture-related businesses
  • Providing a 6’ unpaved shoulder in addition to the paved shoulder for slow-moving agriculture equipment
  • Increasing paved shoulder width to 14’ at school bus stops to provide a safe area for loading and unloading school children
  • Installing rumble strips on the shoulders and both sides of TWLTL or centerline
  • Straightening horizontal curves (to improve sight distance)
  • Flattening vertical curves (to improve sight distance)
  • Widening and paving local road intersections to accommodate truck turning movements
  • Reconstructing driveways
  • Replacing or extending culverts as needed
  • Placing asphalt concrete overlay
  • Relocating utility poles
*The CRZ begins at the edge of the travel lane. The CRZ includes the 8’ shoulder and an additional 12’ beyond the shoulder that is cleared of fixed objects (utility poles, trees, ditches etc.).

Funding Breakdown

The total cost is estimated at $104.6 million in federal and state funds.

Project Schedule

Circulate Draft Environmental Document: October 2018
Project Approval and Environmental Document: January 2019
Advertise Project: July 2020
Begin Construction: November 2020
Complete Construction: November 2022



Project Contact

Cameron Knudson, Project Planner
Phone: (530) 218-1820

Gilbert Mohtes-Chan, Public Information Officer
Phone: (530) 682-6145


Yuba 70 Map (PDF) 


The final environmental document for the Yuba 70 Safety Project is now available upon request at the Caltrans District 3 office, 703 B Street, Marysville.

Please contact Senior Environmental Planner Kelly McNally, to request a copy of any of the following environmental documents. 

  • Yuba 70 Final Environmental Impact Report (FEIR) (PDF)
  • Notice of Preparation of a Draft Environmental Impact Report (PDF)
  • Yuba 70 Draft EIR (PDF)

News / Events

Press Releases:

  • Caltrans Holds Open House for Highway 70 Project in Yuba County
  • Caltrans Seeks Public Feedback on Proposed Highway 70 Project

Video / Photos

No additional photos or videos available.