Engineering deal for Caltrain Broadway grade separation approved

Looking ahead though the path is much murkier, said Murtuza, who suggested ground may not break on constructing the separation project until 2025 — and that’s assuming all $250 million needed to finish the currently unfunded project is landed.

Whether or not this happens largely depends if San Mateo County voters approve a half cent sales tax increase next year. As it pertains to CAHSR, they're fine as long as Caltrain installs quad gates. Most of their efforts will be focused on the city of San Mateo, which has ten crossings that will need to be dealt with. The current major grade separation project is San Mateo's 25th avenue, which hopefully should begin construction over the next two months. It is being funded by SMC's 2004 Measure A, the existing half-cent sales tax increase.

Additionally, for reference here is CHSRA's basic plan for getting HSR up to SF, three alternatives are proposed notably none of them requiring Burlingame but all three requiring San Mateo.