Peninsula Interchange Project

As of September 2019, the traffic study for this project has reached its final stage and is currently in review with both cities of San Mateo and Burlingame. Following completed reviews, the results will be presented to the community. Planners are expecting to present by early 2020.

Project Description:
This project will ultimately relocate the US-101 southbound on- and off-ramps from East Poplar Avenue to Peninsula Avenue to eliminate the partial interchange condition and create a single, full access interchange at Peninsula Avenue and Airport Boulevard. This will result in an improvement to the safety and traffic operations of the southbound US-101 ramps and the intersection of East Poplar Avenue and North Amphlett Boulevard.

The project will provide improvements to the bicycle and pedestrian movements through the intersection of Peninsula Avenue and North Bayshore Boulevard. The project will also provide improvements to local streets to facilitate circulation and property access.  This is considered the long term solution for the safety issues at the Poplar on/off ramps.

Peninsula Interchange Project
The US-101/Peninsula Avenue Interchange Project received grant funding from the San Mateo Transportation Authority (TA) to complete the Caltrans documents, including the Project Study Report (PSR). San Mateo is the sponsoring agency. The PSR-PDS (Project Development Support) phase of the project was completed in May 2015. The PA&ED (Project Approval & Environmental Document) phase of the project is currently underway and is expected to be completed in late 2018.

Related Documents

Project Contact Information

Bethany Lopez, Senior Engineer
Email Bethany Lopez