CCTA associate engineer Jay Zhang and the project''s consultant team presented concept designs Nov. 20 for a shared mobility hub at Walnut Creek BART, part of the county''s Innovate 680 corridor program. Zhang said the main goal is to "alleviate congestion, expand mobility options and enhance travel experience" along the 680 corridor, and that the Walnut Creek site was chosen as a regional hub because it connects BART, multiple bus services and local shuttles.

Consultant Adam Denkberg said the station currently serves a little over 3,000 weekday riders (August 2025 data) and described a package of improvements that would improve first-mile/last-mile connections: striped bike lanes on Riviera (requiring some on-street parking removal on specified blocks), a multiuse path underneath I-680 on Hillside, a raised, curb-protected (Class 4) cycle track on California Boulevard with intersection modifications at Ignacio Valley Road, a taxi and ride-hailing loop, improved wayfinding and real-time arrival signage, and additional bike parking and electric charging infrastructure. "These improvements don't really change capacity," Denkberg said, "the goal is to change demand by making it easier to get to the BART station."

Zhang told commissioners CCTA received a Metropolitan Transportation Commission (MTC) mobility-hub grant in March 2025 of approximately $3,400,000 and is pairing that with Regional Measure 3 (RM3) funds as local match; he said roughly $700,000 from RM3 is allocated in the package and about $450,000 of that is earmarked for environmental work. Because costs and scope increased, Zhang said CCTA and the city are working to "identify and prioritize" which components can move forward to full design and construction now and which should be deferred.

Commissioners probed specifics. On Riviera, Denkberg clarified which curbside blocks would lose parking and which would retain parking to protect residential frontage. On crossing treatments, staff said there are no elevated crossings planned at Oakland Boulevard and crossings would be at grade; project team members said they plan smaller signal/geometry adjustments and protective islands to reduce vehicle turning radii where conflicts have been noted. A city engineer noted Phase 3 transit-oriented development on the site has entitlements and that developer impact fees typically are collected at building-permit issuance, meaning additional developer funding would likely arrive years later if the Phase 3 build proceeds.

Public commenters generally supported the hub but urged additional safety review for bicyclists at the Hillside/State Route 24 on-ramp, asked whether Station Way might provide a more direct bicycle connection to fare gates, and requested secure bike storage. One resident said: "I'm thrilled to see improvements being proposed for the BART station to encourage ridership, bicycling, walking, busing." Planners encouraged remaining survey responses — the online public survey had nearly 400 responses as of the presentation and was scheduled to close Nov. 24.

Next steps: CCTA and city staff will continue environmental analysis and refine costs and priorities; the project is at roughly 10% design and staff expect to incorporate community feedback as design advances through 2026. No formal action was taken by the commission on the hub item at this meeting.