In Millbrae, CA, the Millbrae Avenue corridor divides most of the city from vital connections to the rest of the Bay Area, including the Millbrae Bay Area Rail Transit (BART) and Caltrain stations, US 101 interchange ramp terminals and Old Bayshore Highway. In addition, the area around the Millbrae BART station is experiencing a lot of development which is anticipated to attract more bicyclists and pedestrians. The City of Millbrae wanted to explore multimodal improvements and address safety for all modes across this corridor and US 101 interchange, as well as to and from the BART station.



Kittelson worked with the City of Millbrae to evaluate safety performance throughout the city, with a focus on the Millbrae Avenue corridor from El Camino Real to Old Bayshore Highway. Our team screened the city’s transportation network using safety performance measures from the Highway Safety Manual to assess crash frequency and severity, and evaluated citywide crash patterns to determine potential crash risk factors. Following the evaluation, we developed 30% design plans for the Millbrae Avenue corridor, as well as cost estimates and project performance measures to help with City with grant applications. This effort required our coordination with ongoing project teams for the Millbrae General Plan Update, Priority Development Area Specific Plan, and Active Transportation Plan.¬†

The Outcome

Safer Multimodal Travel in Growing Millbrae, California

Based on this analysis, long-term and low-cost near-term safety improvement design concepts were developed for the Millbrae Avenue corridor; these designs could be combined with affordable housing development projects. The City of Millbrae received an Affordable Housing and Sustainable Communities (AHSC) grant to develop affordable housing and support multimodal improvements around the BART and Caltrain stations.




City of Millbrae


Millbrae, CA