East Contra Costa BART (eBART) Extension

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Bay Area Rapid Transit (BART)

Project Name
East Contra Costa BART (eBART) Extension

Construction Management
Construction Inspection
Staff Augmentation

2019 APWA Northern California, Project of the Year
2019 CMAA Northern California, Project Achievement Award, Transportation
2019 ACEC National, Transportation Honor Award
2019 ACEC California, Transportation Honor Award
2019 CTF Transit Project of the Year, Top 2 Finalist


The complete $462M project included the rail tracks, two stations, a park and ride facility, and maintenance building. The contract included modifications to ten miles of BART rail tracks beyond the Pittsburg/Bay Point station, a new transfer platform, and a building to house train control equipment.

The project accommodated a diesel train to run the median of State Route 4 from the existing Pittsburg/Bay Point BART station to an eBART terminus station in Antioch.

Additional work performed by Caltrans included widening of the State Route 4 median to accommodate the eBART tracks, and an access tunnel under State Route 4. The project was built in conjunction with the expansion of State Route 4 from four lanes to six and eight.

MNS coordinated work with seven other simultaneous construction contracts. Construction management services included ensuring contractor adherence to plans and specifications; responding to RFIs; reviewing and monitoring SWPPP plans, the  contractor’s baseline and monthly update schedules and reviewing, verifying, and negotiating the contractor’s submitted payment invoices; implementing and monitoring the submittal process; preparing and processing change notices and change orders; coordinating field inspection, testing, and survey teams and involved utilities and involved agencies, including BART, Caltrans, Contra Costa Transportation Authority (CCTA), and the Cities of Pittsburg and Antioch; identifying potential claims and delay issues and options to mitigate potential damages; and resolving issues with the contractor once approved by BART.

MNS pre-construction activities included constructability review of plans and specifications, verification of existing field conditions, leading pre-bid meetings, and providing bidding support. MNS provided resident engineering and electrical/systems inspection for the construction of this project. Electrical, systems, and signaling inspection involved inspection of electrical, various systems components, and train control facilities.

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