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

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 at Bayshore Blvd and Marin Street, and Cesar Chavez East at the 101-North highway on-ramp. The scope includes striping improvements, upgrading bikeways, and special pavement striping and is expected to be installed in Late 2024. 

Improvements include the following:

In addition, the SFMTA is working with Public Works to design raised crosswalks at four locations, upgrade multiple curb ramps and bulbs, and install a Rapid Rectangular Flashing Beacon. Details of the design and schedule will be posted as the project continues.