Washington, DC Metrorail Blue Line Extension to Largo Town Center -- Largo, MD

This paper describes how, as part of a long-term service expansion plan, the Washington Metropolitan Area Transportation Authority (WMATA) extended its Metrorail Blue Line service eastward from Addison Road near the Washington, D.C. boundary, to a planned new retail and commercial development known as Largo Town Center in Prince George’s County, Maryland. The rail extension, which included two new stations, was conceived to help ease congestion on heavily traveled roadways in the rapidly developing area east of the Nation’s Capital, as well as to provide an economic stimulus to this section of the suburban county. This project offered challenges at a number of levels, especially in relation to the constraints generated by the fast-track delivery schedule. WMATA required both stations and their parking facilities be fully operational before December 2004 in order to satisfy its Federal Grant Agreement. The design-build contract was awarded in October 2002, with construction beginning the following February. One early decision, which was made to help shorten construction duration, was to use precast concrete in a number of areas, particularly for the platform support framing. This one decision alone reduced the construction schedule by several months. Under the traditional Design-Bid-Build delivery method, conventionally constructed stations with a 600-foot platform and concourse have historically taken 36 months or longer just to complete the construction. However, this Design-Build team’s innovative approach allowed both stations as well as their adjacent facilities to be completed in 26 months, a period that included not only construction, but also the complete design. Secondly, the architecture of the two stations departed from the massive concrete barrel vault and gull wing design developed by the system’s original architect. WMATA had developed a new station architecture standard that relied on painted structural steel plate, tubes and columns with continuous skylights to create a bright, open appearance. WMATA wanted its station architecture to compliment the newer architecture of the surrounding retail and commercial buildings. WMATA.s station architectural design concepts were included in the Request for Proposal (RFP) documents for the potential design-build firms to complete station final architectural designs. Through the additional innovations of the Design-Builder the final station architecture has been very well received by the business and residential communities.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Maps; Photos;
  • Pagination: 11p
  • Monograph Title: 2007 Proceedings Rail Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01051813
  • Record Type: Publication
  • ISBN: 1931594260
  • Files: TRIS
  • Created Date: Jun 18 2007 4:56PM