Pine Hollow Road Complete Streets Feasibility Study

Project background

The City of Concord, jointly with the City of Clayton, was awarded a Caltrans Sustainable Transportation Planning Grant to conduct a Complete Streets Feasibility Study along Pine Hollow Road. This project was identified as a recommended project in the city’s 2016 Bicycle, Pedestrian and Safe Routes to Transit Plan. 

The study corridor is a 2.2-mile segment of Pine Hollow Road/Alberta Way from Clayton Valley Charter High School to Mount Diablo Elementary School. The corridor serves as an important connection between schools, parks, as well as residential and recreation areas within the cities of Concord and Clayton. Pine Hollow Road also experiences significant truck traffic as it serves as an access route for two quarries located in the unincorporated County directly south of the roadway.

On March 9, 2021, the City Council approved a Task Order with Kimley-Horn to perform the feasibility study. The study period is summer 2021 to fall 2022.  

The study has identified, evaluated, and recommended a package of multimodal and operational strategies to enhance bicycle and pedestrian safety and circulation, residential and school access, access to transit, and trail connectivity for all users. The study is grounded in a robust public engagement process.  Other key elements of the study include detailed existing conditions review and transportation technical analysis to develop design alternatives that incorporate Complete Streets elements. 

The study recommendations were approved by the City's Bicycle and Pedestrian Advisory Committee (BPAC) on June 21, 2022. The study is scheduled for the City Council approval on August 23, 2022. Map 782_620

Proposed Concept Design

Based on feedback received from the community in Summer 2021, Fall 2021, and Spring 2022, as well as the extensive technical analysis, the project team has prepared a detailed set of recommended corridor improvements. The concept design set of corridor improvements is available here

Screenshot of the Pine Hollow Corridor document

For renderings of Pine Hollow Road with the proposed improvements compared with existing conditions, click here:

Screenshot showing a before and after of the Pine Hollow Rd project between Pennsylvania and Indiana

The proposed recommended concept design will be utilized to pursue grant funding for final design and construction of the improvements.

Recommended Improvement CONCEPTS

Based on feedback received from the community, input from the Advisory Group, and technical analysis of the corridor, a set of potential improvements to create a safer and more comfortable corridor for pedestrians, bicyclists, transit riders, and motorists was initially identified (see them here) and later consolidated as proposed recommended improvements. The recommended improvement concepts can be viewed here

These improvement options were shared with the community in winter 2021. That community feedback was used to create the proposed concept design noted above.

Project timeline

The overall study is expected to take 18 months to complete as illustrated here:

Pine Hollow Timeline 2022-05-04

Stakeholder engagement

Advisory Group:

An advisory group has been formed to guide this study, and is comprised of key stakeholders including representatives from each of the five schools within the study area, staff from the Cities of Concord and Clayton, County Connection and Bike Concord.

Community Outreach:

Extensive community outreach using various methods and tools was performed throughout the study period. It initially focused on identifying improvement needs and later gathered feedback on the proposed improvement concept options, and finally on the recommended improvement concepts.


An online survey with an interactive map and a questionnaire was released in July 2021 for a 3-week period. It sought input from the local community and other users of the road in terms of issues, concerns or suggestions for improvements. It received robust response, which is being used to develop the potential improvement concepts.


Based on the existing conditions data and feedback received from the public outreach over summer 2021, the study team had developed potential improvement concepts, which were shared with the community in fall 2021 in various engagements: 


The study team held two outreach events along with an online survey in Spring 2022 to discuss proposed improvement recommendations for Pine Hollow Road. The online survey sought to identify the top priority improvements from the community.

  • A temporary one day pop-up on April 27th demonstrating a few elements of the recommended improvements between Pennsylvania Blvd and Indiana Dr.
  • A virtual community workshop on May 4th at 6:30 pm.

Please click here to download the community workshop presentation.  English language version.   Spanish language version / Versión en español. Una intérprete de español estará disponible durante la sesión de preguntas y respuestas.

Click here to view the workshop recording.

For more details on the improvement concept designs, please click here.

Child riding a bike at Pine Hollow PopupChildren riding bikes at Pine Hollow Popup

Study resources

For questions related to this Study, please email

Traffic on Pine Hollow Road