Appian Way Complete Streets Study


Project No.: 0662-6R4212
Supervisory District: 1

Location: Along Appian Way from Allview Avenue to San Pablo Dam Road in El Sobrante, Unincorporated Contra Costa County.

  • Appian Way/Valley View Rd Intersection
  • Segment 1 – Allview Avenue to Valley View Road
  • Segment 2 – Valley View Road to San Pablo Dam Road


The study identified a range of improvements on Appian Way to provide community enhancements, including continuous bicycle and pedestrian facilities, improving existing and future bus stop locations, installing traffic calming features such as bulb outs and median refuge islands while also improving access consistent with the Americans with Disabilities Act (ADA). 
iThe study included an alternative to construct a roundabout at the Appian Way Valley/ View Road intersection.

Purpose and Need: 

The study stems from the County Board of Supervisor’s decision in December 2013 to approve a general plan amendment to change the ultimate 4-lane roadway configuration for Appian Way and retain the existing 2-lane (plus center turn lane) configuration. Future traffic volumes for the roadway are not expected to increase greatly in the future.  The Board also directed the Public Works Department to study what complete streets improvements along Appian Way could be constructed. 

Complete Streets are defined as “streets for everyone”. They are designed and operated to enable safe access for all users, including pedestrians, bicyclists, motorists and transit riders of all ages and abilities.

Once a two-lane rural road, Appian Way has been improved incrementally in
segments as Contra Costa County has developed. As a consequence, physical conditions within the corridor are varied. There are numerous existing gaps in pedestrian and bicycle facilities. The purpose of the project is to enhance community identity by providing safe conditions for all modes of travel (bike, pedestrian, transit, vehicular).

Study Funding:
Preliminary engineering, including the study, is funded by Contra Costa County. No funding has been identified for any additional phases.

Community Meetings:
  • Public Workshops – Two in November 2014
  • El Sobrante MAC - December 2014
  • Public Workshop (MAC and Chamber of Commerce) - May 2016
  • El Sobrante MAC - June 2016
Coordination and Meetings with AC Transit and Contra Costa County Fire Protection Distsrict

 Project Documents



Contact Us

Nancy Wein
Senior Civil Engineer
Transportation Engineering
Ph:(925) 313-2275