San Francisco Roadway Bridges Project

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Scope & Need
Caltrain will remove and replace the existing vehicular/pedestrian bridges over the Caltrain tracks at 22nd Street, 23rd Street, and Paul Avenue in San Francisco. Existing abutments will also be retrofitted to support the new structure. Utilities supported by the bridges will be temporarily relocated during bridge removal and construction.

The three bridges are deemed structurally deficient, do not meet existing seismic safety standards and must be replaced to ensure the safety and well-being of community members and Caltrain passengers.

San Francisco Roadway Bridges Project - Weekly Update

Night/Weekend Work
There is no night or weekend work scheduled for the San Francisco Roadway Bridges Project.

Weekday Work

* In general, all weekday construction activity will occur between 7 a.m. and 5 p.m. on Monday through Friday. Neighbors may experience construction noise during this time. We apologize for the inconvenience.

22nd Street Bridge
Monday, June 19 to Friday, June 23, crews will demobilize equipment from the project site. Crews are expected to be complete with all activities by Friday, June 23.

22nd Street Detour

 23rd Street Bridge 
23rd Street Bridge
Paul Ave. Bridge
Paul Avenue Bridge

22nd Street Bridge
22nd Street Bridge

Construction Impacts

Work to replace the bridges is scheduled to start in early 2015 and is expected to last 9 to 12 months per bridge. While a majority of the work will be completed during the day, in order to maintain rail operations, night and weekend work will be required for some construction activities. 

Community members may experience temporary, localized noise impacts during construction. Construction crews will use best management practices to reduce noise and other impacts to the community and Caltrain will notify community members well in advance about construction activities that could result in noise impacts. 

Construction Sequence

To limit impact on traffic, construction of the 22nd and 23rd street bridges will not take place concurrently. Construction will begin with the 23rd Street Bridge, followed by the 22nd Street Bridge. The construction sequence for the Paul Avenue Bridge is not impacted by the other bridges. 

Project Schedule

  • 23rd Street: Late April 2015 to March 2016 (Completed)
  • Paul Avenue: Jun. 2015 to Nov. 2016 (Completed)
  • 22nd Street: April 2016 to May 2017

Public Outreach & Community Engagement
Caltrain will be engaging the public in multiple venues to provide more information and collect feedback about the project. Nearby residents and business will be notified via mail about upcoming community meetings. Caltrain will also be working with local community-based organizations to build awareness about the project and its impacts.

Project Documents

March 2016 Dogpatch Neighborhood Association Presentation (PDF) - 3.11.16

March 2015 Community Meeting Presentation (PDF) - 3.5.15

San Francisco Roadway Bridges Fact Sheet (PDF) - Updated 3.5.15

March 2015 Community Meeting Notice (PDF) - 2.18.15

Dogpatch Neighborhood Association Presentation (PDF) - 5.14.14

February 2014 Community Meeting Presentation Slides  (PDF)  - 2.25.14

Community Meetings
If you are interested in having Caltrain present at your organization, please email 

To contact Caltrain staff directly, please email or call the Construction Outreach Hotline at 650.508.7726.

22nd and 23rd Street Bridges Project Location


Paul Avenue Bridge Project Location 

Paul Ave Map              

bct - 6/2/17