BART to Antioch revenue service began in May 2018 and the demand for the new service has doubled the original forecast with around 3,050 daily exits at the Antioch Station. The success of the new service has resulted in full occupancy of the parking lot by 6:00 am on weekdays. After analysis of multiple parking alternatives to address the parking demand, as well as access improvements at the station, BART proposes constructing an additional surface parking lot east of the existing parking lot. BART owns this adjacent property and the new parking lot will accommodate approximately 800 spaces.
The cost to expand the parking lot is currently estimated at $16 million. In addition to Measure J funds, funding partners include Metropolitan Transportation Commission (MTC), BART, and East Contra Costa Regional Fee and Financing Authority (ECCRFFA). The project is currently in the environmental clearance and design phase. Construction is targeted to begin in Summer of 2019 and end in Spring 2020.
On Wednesday, October 17, the Contra Costa Transportation Authority agreed to appropriate a total of $5,081,931 in Measure J funds, for the Antioch Parking Lot Expansion project.