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State Route 20/49 Complete Streets Interchange Improvements Feasibility Study

State Route 20/49 Complete Streets Interchange Improvements Feasibility Study

Caltrans conducted a feasibility study on the State Route (SR) 20/49 interchange to assess and develop comprehensive alternative solutions that address bicyclist and pedestrian safety, accessibility, and connectivity. The study explored alternative safety solutions that improve traffic flow for easy and efficient access to the interchange. 

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Overview

Overview

Caltrans and our partners initiated a feasibility study to evaluate accessibility for bicyclists, pedestrians, and vehicles at the SR 20/49 interchange located in the City of Grass Valley. 

Purpose

The purpose of this study is to develop potential solutions that address bicyclists, pedestrians, and vehicular needs at or near the interchange. In collaboration with local and regional partners, the intent of the study is to create a safe, comprehensive, connected, and integrated transportation network that enhances transportation accessibility for the interchange and its surrounding facilities through viable infrastructure improvements. 

Need

Evaluate the current conditions at the SR 20/49 interchange to better support bicyclists, pedestrians, and vehicular facilities. Currently, the interchange lacks bicycle facilities and only includes sidewalks on the north-side of the interchange. This study will consider existing travel performance measures and will seek to identify improvements that better accommodate all modes of travel. 


Study Area Map

Map of State Route 20 & 49 Interchange

Feasibility Study Timeline

Project Timeline

complete
complete

Initial Data Collection, Analysis, and Potential Improvement Designs

September 2025-November 2025

complete
complete

Public Survey

April 27, 2026 - May 22, 2026

complete
complete

Draft Feasibility Study

March 2026 - June 2026

complete
complete

Revise and Finalize Alternative Solution(s) Designs

May - June 2026

complete
complete

Final Feasibility Study

September 17, 2026: Feasibility Study report was finalized by Caltrans 

Partnerships

Caltrans worked closely with local agencies throughout the development of the Feasibility Study. 

  • City of Grass Valley
  • Nevada County Transportation Commission (NCTC)
  • Nevada County
  • Nevada County Connects