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Southeastern Pennsylvania Transportation Authority Market Street Elevated Reconstruction

Carefully sequenced upgrades to guideway and stations keep travelers on the go.
  • New SEPTA Market Street stations are ADA compliant-Gannett Fleming

    New stations, including 56th Street Station, are ADA compliant and provide modern transit amenities.

  • Station entrances make SEPTA stations accessible-Gannett Fleming

    Station entrances, with elevated guideway connections, are adjacent to platforms and waiting areas.

Southeastern Pennsylvania Transportation Authority

Philadelphia, Pennsylvania

Our Role
Structural, Utility Coordination, Traffic Control, Geotechnical, Environmental Assessment.

Construction Cost
$770 million
  • Elevated guideway replaced and transit stations built to improve rider comfort
  • Specialized construction staging kept trains and stations in operation.

The Southeastern Pennsylvania Transportation Authority (SEPTA) faced the challenge of replacing the superstructure of the century-old elevated guideway as well as five stations on its Market-Frankford Line while maintaining continuous weekday rail service. Gannett Fleming, as a major subconsultant, provided engineering services for the replacement of 11,000 feet of elevated guideway and three elevated stations for the project to increase traveler safety and comfort.

What We Did

Gannett Fleming provided structural, constructability analyses, utility coordination, traffic control, track design, geotechnical, traction power design, environmental assessment, station design oversight, and construction-phase services. Complex staging for the stations and guideway ensured that operations could be maintained on weekdays throughout construction. The new stations provide modern transit station amenities while integrating the facilities within the existing urban environment.

Key Features

  • Americans with Disabilities Act compliance enhances accessibility
  • Modern amenities increase traveler comfort.

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