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Posted on: February 4, 2021

Event Center - Vaccination Site & Traffic Impacts

Activity & Vaccination Site at the San Mateo County Event Center

Starting in early February, we are expecting increased traffic and activity at the San Mateo County Event Center. Visitors can access the site by appointment only. If you do not have an appointment, please do not go to the Event Center at this time.

We are working closely with the County and Event Center to manage traffic impacts in the area. Traffic patterns are expected to change over the coming weeks and could change suddenly. We ask you and your neighbors to plan accordingly for traffic congestion when leaving or returning to the Bay Meadows and Fiesta Gardens neighborhoods. Please follow all directional street-level signage. Learn more about the traffic detours in place on our Event Center Traffic web page.

Appointment-Only Vaccination Program

The County of San Mateo and private health care providers are using the County’s Event Center for appointment-only COVID-19 vaccination programs. Supply is extremely limited, and vaccines are only accessible for eligible patients with a prescheduled appointment – drop-ins are not allowed. Visit to learn about when you will be eligible to make an appointment to receive a vaccine.

These vaccination programs are essential to public health and will help us overcome the COVID-19 pandemic. We expect increased visitors as the vaccine becomes more widely available so please be patient as we work together to address the pandemic. 

Construction & Traffic in Area

Nearby construction projects to improve critical infrastructure will continue in and around the Event Center. The City’s Clean Water Program is building the Underground Flow Equalization System at the Event Center, which will help protect the environment and serve the community during extreme storms. Construction on the project at the eastern corner of the Event Center parking lot is expected to ramp up beginning next week.

The 25th Avenue Grade Separation Project is also continuing to make great progress toward its goal of improving traffic safety and lowering train horn noise in our City. We are expecting the new east-west connection at 28th Avenue and El Camino Real to open later this spring, followed by 25th Avenue closing temporarily to finalize the grade separation.

Staff will continue to monitor the traffic impacts in the area and could make temporary changes to traffic patterns due to volume.  Please watch for street signage, limit your car travel during daytime hours – if you can – and stay the kind and courteous San Mateo residents that you are. 

We know these projects, and the increased use of the Event Center, may cause some temporary disruptions to our community. We’ll continue to work closely to reduce the impacts, ensure everyone’s safety and do our best to keep you informed. We share your desire to see 2021 as a year filled with promise.

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