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RFP Issued for Yellow Line Bridge, Tunnels

Wednesday, March 17, 2021

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The Washington Metropolitan Area Transit Authority has recently issued a request for proposals involving the rehabilitation of the Yellow Line Bridge over the Potomac River and associated tunnels between Pentagon and L’Enfant Plaza stations.

As part of the request, the Metro is seeking a Construction Manager at Risk for the major capital project.

About the Structure

Built in the 1970s, reports claim that the 3,000-foot-long Yellow Line Bridge is beginning to show excessive wear and corrosion due to decades of water infiltration and underground moisture. The bridge is supported by a box-girder spans and several piers.

As a result, the water damages have also worsened the erosion of the steel-lined tunnels and has subjected the liner plates to stray current. The original construction of the tunnels are reported to have taken place more than some 40 years ago.

Fletcher6, CC-BY-4.0, via Wikimedia Commons

The Washington Metropolitan Area Transit Authority has recently issued a request for proposals involving the rehabilitation of the Yellow Line Bridge over the Potomac River and associated tunnels between Pentagon and L’Enfant Plaza stations.

Although the WMATA has been performing ongoing maintenance and leak mitigation on the structures, the infrastructure now calls for long-term repairs as to avoid structural failure in the future.

Several years ago, speed restrictions were put into place due to track conditions. In 2015, the Yellow Line tunnel between the bridge and the L’Enfant Plaza station was the site of a deadly smoke incident that caused dozens of hospitalizations and one fatality.

By 2017, leaks in the tunnels worsened, causing the infrastructure to operate on a single track. The following year, the Yellow Line was shut down for several weeks for renovations.

RFP, Construction Plans

“Metro is investing in an aggressive capital campaign to rehabilitate and repair elevated structures, and the Yellow Line Bridge is the top structural priority providing the region with a vital transportation link across the Potomac,” Metro’s Executive Vice President of Capital Program Delivery Laura K. Mason said in a statement. “Advancing this project quickly is good for our customers and will allow Metro to utilize this process on future projects to more quickly address critical safety needs of other elevated structures.”

To do so, the WMATA is requesting Technical and Price Proposals from construction firms qualified to perform CMAR professional and technical services required for four Phase 2 Construction Work Packages. However, the packages have been further described as Phase 1 Preconstruction Services.

According to reports, this is the Metro’s first project using CMAR, a method widely used for large-scale infrastructure projects. Through this method, the design, pre-construction work and pricing will occur concurrently to improve project delivery and schedule.

Throughout the design process, the CMAR will coordinate with the agency and provide a guaranteed price for construction as the selected contractor will evaluate construction feasibility, provide value engineering and propose cost-effective alternatives in the design phase, which provides more flexibility and cost controls.

Should the project be carried out in a traditional manner as compared to the streamlined major capital project, reports indicate that a year or more could be added to the construction timeline, should the agency wait for the design process to be completed before awarding a construction contract.

During the rehabilitation project, a selected CMAR will rehabilitate the Yellow Line Bridge, which involves upgrading the structure’s fire suppression system, in addition to remediation work on the steel lined tunnels between Pentagon and L’Enfant Plaza stations to repair cracks and water infiltration.

Responses to the RFP are due by April 7. WMATA is slated to begin construction by the fall of 2022 with completion slated for the end of that same year. The project is part of Metro’s 10-year, $15 billion Capital Improvement Program.

   

Tagged categories: Bridges; Bridges; Contractors; Contracts; Infrastructure; Infrastructure; NA; North America; Program/Project Management; Project Management; Rail; Transportation; Tunnel; Upcoming projects

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