State Route 49 Safety Assessment

In February 2020, a team including Caltrans and its transportation partners embarked on a safety assessment of the State Route 49 corridor between Auburn and Grass Valley to identify safety-related improvements that could be installed in the very near term, identify enhancements that could be added to planned construction projects, and plan longer-term projects to improve corridor safety.

For analysis purposes, the team divided the SR-49 corridor into four segments of similar characteristics based on features that include population density, traffic volumes and the rural or urban nature of the area. The existing safety features and collision history of each segment were assessed and used to outline recommendations for improvements to the corridor.

  • Segment 1: Interstate 80 to Dry Creek Road
  • Segment 2: Dry Creek Road to Wolf Road/Combie Road
  • Segment 3: Wolf Road/Combie Road to Allison Ranch Road/La Barr Meadows Road
  • Segment 4: Allison Ranch Road/La Barr Meadows Road to McKnight Way

In addition to the SR-49 Safety Assessment Report, Caltrans has also developed a series of four online videos highlighting key elements of the report.

State Route 49 Safety Assessment Report

State Route 49 Safety Assessment Report

Hard copies of the State Route 49 Safety Assessment Report may also be viewed at the following locations:


Placer County

Community Development Resource Agency

3091 County Center Drive

Auburn, CA 95603

By appointment only; please call (530) 745-7591


Auburn Public Library

145 Fulweiler Avenue, Ste. 150

Auburn, CA 95603

Hours may be limited due to the COVID-19 pandemic.


Nevada County

950 Maidu Avenue

Eric Rood Administrative Center – Public Kiosk

Nevada City, CA 95959

State Route 49 Safety Assessment Report Virtual Open House

Four-part video series: YouTube

State Route 49 Projects in Construction

State Route 49 Projects in Development

Public input is essential for project development and enables the Department to account for various perspectives and impacts for equity. Please submit comments or questions about the State Route 49 Safety Assessment Report to Caltrans District 3 via mail or email.  The comment submission deadline is Friday, December 11, 2020.

Caltrans District 3

Program/Project Management

703 B Street

Marysville, CA 95901

Attn: HWY 49 Safety Assessment

Caltrans would also like to thank and recognize the many partners involved in developing the Safety Assessment Report: Federal Highway Administration, Placer County Transportation Planning Agency, Nevada County Transportation Commission, Placer County Department of Public Works, City of Auburn, California Highway Patrol, CALFIRE, and local fire departments.