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Southwestern Yard Maintenance Facility Design and Construction Administration

Leading-edge repair facility uses sustainable solutions to support new transit line in Los Angeles.
  • Exterior view of new LA Metro vehicle maintenance building showing its modern design - Gannett Fleming.

    The facility has attained LEED Silver certification, with a focus on sustainability. Photo by Michael Urbanek Photography

  • Line of LA Metro light-rail cars in front of new Southwestern Yard facility - Gannett Fleming.

    Able to service and store 56 light-rail vehicles, the facility could be expanded to handle 70. Photo by Michael Urbanek Photography

  • Exterior view of vehicle washing facility with material storage building in background - Gannett Fleming.

    An innovative capture and reuse system recycles water for vehicle washing. Photo by Michael Urbanek Photography

  • Interior of maintenance facility shows train vehicle with access walkways above - Gannett Fleming.

    The facility is fully equipped to handle service, inspection, repair and maintenance. Photo by Michael Urbanek Photography

  • A view of the outdoor track used for testing of vehicles - Gannett Fleming.

    An outdoor track facilitates the testing of vehicles before they return to service. Photo by Michael Urbanek Photography

Los Angeles County Metropolitan Transportation Authority

Hensel Phelps/Herzog

Los Angeles, California

Our Role
Design, Construction Administration Services.

115,000 sq. feet
Construction Cost
$172 million
New Construction
3 years, 7 months
  • Support for light-rail transit line that will serve 27,400 people daily
  • Expandable service capacity to accommodate future light-rail growth
  • Earthquake protection to prevent or reduce damage from seismic activity

With a strong focus on sustainability, the Southwestern Yard Maintenance Facility was built to efficiently service and repair light-rail vehicles (LRVs) for two Los Angeles County Metropolitan Transportation Authority (LACMTA) transit lines. The facility is part of the ongoing Crenshaw/LAX Transit Corridor project, which will connect downtown and the Westside region of Los Angeles with the South Bay region of Los Angeles County. The lines will serve an estimated 27,400 passengers daily by 2035.

Southwestern Yard is large enough to service and store 56 LRVs and could be expanded to accommodate 70. The facility has earned a Leadership in Energy and Environmental Design (LEED) Silver certification for its energy-efficient features, which include a water capture and reuse system for vehicle washing. This system and other water-saving fixtures reduce water consumption by 40%. Gannett Fleming designed the facility, including an outdoor test track, traction power substation, and overhead contact system (OCS), and provided construction administration services.

What We Did

The facility features five maintenance bays, a two-level administration area, a small shops area, and a two-story parts storage system designed to be expandable. It is fully equipped to handle LRV service and inspection, motor and body repairs, painting, cleaning, and washing. Because of its location in a region at risk of seismic activity, the facility was developed in accordance with seismic design principles to prevent or reduce damage in the event of an earthquake.

The track configuration and site layout support safe LRV movement between functional facilities, storage sites, and mainline tracks. A 750-volt traction power substation and OCS provide electricity to the LRVs. The facility features on-site stormwater treatment to remove oil from runoff and prevent overloads on the municipal system.

Key Features

  • Five maintenance bays enable full inspection and repair of LACMTA LRVs.
  • Parts storage system facilitates quick LRV repair and can be expanded if needed.
  • 750-volt substation and OCS provide power to move LRVs throughout the facility.

Sustainability Features & Outcomes

  • More than 20% of the construction materials consist of recycled content, reducing waste and energy consumption.
  • Capture and reuse system for vehicle washing and high-efficiency plumbing fixtures reduce water usage by 40%.
  • On-site stormwater treatment reduces runoff pollution and lessens burden on municipal system.
  • Drought-tolerant landscape plantings eliminate the need for watering.
  • Bicycle parking, designated parking for fuel-efficient and carpool/vanpool vehicles, and electric vehicle charging encourage the use of energy-saving transportation by employees.

Awards & Recognition

  • Honor Award, 2020, American Council of Engineering Companies (ACEC) California, Engineering Excellence Awards

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