Staff outlines cost-saving options for Rangstorf grade separation after major estimate increase; committee urges continued work to secure funding

City staff presented updated cost estimates and potential cost‑reduction measures for the Rangstorf Avenue grade separation project after recent third‑party and contractor reviews raised construction cost projections. The committee reviewed options and directed staff to continue design validation while pursuing funding and right‑of‑way work that can reduce future escalation.

Joy Houghton, senior civil engineer, walked the committee through the updated numbers and value‑engineering options. Houghton said Caltrain currently operates "104 trains per weekday resulting in 17 minutes of gate downtime per peak hour at Rangstorf Avenue," creating backups that affect access to schools, the park, community center and local businesses. Houghton summarized the cost history: a January 2024 staff estimate based on 35% design had put total project cost at about $325 million (with $242 million construction estimate). Updated contractor and third‑party estimates received in October 2024 raised the construction estimate to about $312 million and the total project cost to $453 million; the staff analysis…