Cesar Chavez/Potrero Ave/Bayshore Blvd Intersection Improvements (The Hairball)

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Project Introduction

In the area known as the Hairball, Cesar Chavez Street, Bayshore Boulevard and Potrero Avenue change from city streets to a complex arrangement of bridges and ramps linking with Highway 101. The intersection is built in three levels, with pedestrian and bicycle circulation generally restricted to the middle and ground levels, while motor vehicles use all three levels. This series of pedestrian and bicycle pathways in the Hairball allow for connections between Cesar Chavez Street, Bayshore Boulevard, and Potrero Avenue that are not possible by vehicle. However, the network has clear gaps where the bicycle and/or pedestrian facilities are limited or substandard. Certain portions of the network are not ADA accessible and are in poor condition. Lastly, because of the many paths that intersect in this area, the interchange is challenging to navigate and there are points of high conflict between vehicles, pedestrians and bicycles.

In the first phase of the project, the SFMTA and Public Works installed upgrades to the southwestern and southeastern entry areas to the pathways.

The SFMTA is currently undertaking another series of spot improvements to address these safety issues, specifically along Bayshore Boulevard between Marin Street and Jerrold Avenue, and approaching Cesar Chavez Street. The scope includes striping improvements, upgrading bikeways, and traffic calming. Implementation is expected to take place in 2025. 

Improvements
Pedestrian refuge island reconfiguration and pedestrian signal improvements at Bayshore Boulevard and Jerrold Avenue
Two-way bikeway on Bayshore Boulevard separated by concrete barriers
Speed Cushion on Bayshore Boulevard north of Marin Street
Raised crosswalk on Bayshore Boulevard south of Cesar Chavez Street
Road diet and striping modifications on Cesar Chavez Street underneath Highway 101

Long-Term Improvements

In addition, the SFMTA is working with Public Works to install long-term capital improvements to further bring safety and accessibility enhancements to the area. The scope of this work includes flashing beacons, signal modifications, curb ramp upgrades, raised concrete crosswalks, new sidewalks, and westbound protected bikeways. Details of the design and schedule will be posted as the project continues. 

Project Timeline
Planning/Design
Design paint and post improvements
Pending
Legislation
Legislate paint and post improvements
Pending
Construction
Install paint and post improvements
Pending
Project Status
  1. Detailed Design

COMMUNITY ENGAGEMENT

This project builds on previous outreach efforts of the Cesar Chavez East Community Design Plan.  The SFMTA conducted targeted outreach for the preliminary designs from key stakeholders for the project including District 10, District 9, the Bicycle and Pedestrian group of Caltrans District 4, and the San Francisco Bike Coalition. 


 

Contact Information
Jonathan Chimento