Pine Hollow Road Complete Streets Feasibility Study

study 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 was conducted from 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 City Council approved the study on August 23, 2022. 

Pine Hollow Vicinity Map

Recommended 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 final set of recommended corridor improvements, which was approved by the City Council in August 2022. The recommended concept design for the corridor improvements is available here

Screenshot of the Pine Hollow Corridor document

Renderings for two locations were prepared to show the representative recommended improvements compared with existing conditions:

Pine Hollow BeforeAfter Snip Mardon to Camino Solano

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

Stakeholder engagement

Advisory Group: An advisory group was been formed to guide this study, and was 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.

Summer 2021 Online Survey: 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.

Fall 2021 Community Workshops: 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 at a virtual community workshop (English-language presentation, Spanish-language version/Versión en español, workshop recording), pop-up events at local schools along the corridor (pop-up workshop boards), and an online survey to seek comments on the potential improvement options.

Spring 2022 Outreach: The study team held two outreach events along with an online survey to discuss proposed improvement recommendations and to identify the top priority improvements from the community. The outreach events included a one-day pop-up on April 27, 2022, demonstrating a few elements of the recommended improvements between Pennsylvania Boulevard and Indiana Drive, and a virtual community workshop on May 4th, 2022 (English-language presentation, Spanish-language version/Versión en español, workshop recording). See pictures below.

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


The recommended concept design will be utilized by the City to pursue grant funding for final design and construction of the improvements. The City will continue to engage with the community and stakeholders in future phases as the project progresses further.

Study Report

Traffic on Pine Hollow Road