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Proposed Silver Line Express starting at West Falls Church Metro derailed by poor cost-benefit performance

Silver Line Express proposal, via WMATA

Metro has some bad news for fans of a proposed “Silver Line Express” rail service.

A recent cost-benefit analysis by the Washington Metropolitan Area Transit Authority (WMATA) found the project had the lowest cost-effectiveness of the five options being considered to boost capacity and reliability on the Blue, Orange, and Silver lines.

The hypothetical “Silver Line Express” would run through a new tunnel and tracks starting at the West Falls Church Metro station out to a second Rosslyn station in Arlington. The new tunnel could support express service, local service, or some mix of the two, a WMATA report said.

But a WMATA report and discussion at a Metro Board of Directors meeting on Thursday (Sept. 9) indicated the Silver Line Express may never leave the hypothetical stage. The cost-benefit analysis most heavily favored a new Blue Line route down from Union Station down to National Harbor.

The Silver Line Express carries an estimated cost of $20-25 billion, about the same as a new Blue Line route, but the report indicated that the express line would generate fewer new weekday trips — 139,000 compared to 180,000 for the new Blue Line — and receive less in annual fare — $119.4 million versus $154.2 million.

“When you look at the performance, the new Blue Line to national harbor offers highest impacts and highest benefits while lower cost alternatives have fewer benefits,” Mac Phillips, a principal planner and senior transportation economist-analyst for WMATA, told the Metro Board.

A cost-effectiveness ranking of the projects found the Silver Line Express to be the least cost-effective proposal, and only sitting at “medium-high” in terms of benefits.

Other options to expand capacity and ridership proposed by the study, which launched in 2019, include realigning the Blue Line at the second Rosslyn station to Greenbelt in Maryland and separating the Orange and Silver lines at Clarendon to create a second Silver Line connection at the proposed new Rosslyn station.

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