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SR 826/Palmetto Expressway, Section 2

Miami, Florida

Market Sector

Bridge, Surface Transportation

Type

Conventional, Roadway Design

Services Provided

Design

Region

Americas

A Florida Department of Transportation, District Six initiative, this $177 million design-build-finance project was led by Condotte American-Demoya Construction Joint Venture, in conjunction with BCC Engineering, to whom T.Y. Lin International is an engineering subconsultant.

Project Highlights:

  • Major reconstruction and widening of limited access connecting multiple communities in Miami-Dade County.
  • Design-Build-Finance Project
  • Essentially eliminated the need for the financing component of the project by reducing the maximum bid price by $50 million.
  • Roadway Lighting
  • Landscape Architecture
  • Agency Permitting

The Palmetto Expressway is a major limited access urban expressway centrally located in Miami-Dade County. The southern section of the Palmetto Expressway serves the communities of Kendall, South Miami, West Miami and Coral Gables. When the Palmetto Expressway was first opened, it traversed tracts of woodland and farmland which have since been considerably urbanized. In an effort to accommodate the expanding number of users who now utilize the expressway on a daily basis, the Florida Department of Transportation has been implementing a program of reconstructing sections of the expressway to improve capacity, operations and safety along the corridor since the early 1990s.

The design-build-finance project, Section 2, includes approximately three miles of expressway and three interchanges in the southern reach of a 24-mile corridor. Project goals include widening the mainline from two to three lanes and three to four lanes in each direction, adding auxiliary lanes between all interchanges, incorporating interchange improvements including surface streets, as well as operational and safety improvements along the mainline and interchange ramps. The work included drainage, lighting, landscaping, Intelligent Transportations Systems (ITS), and signalization improvements. T.Y. Lin International was responsible for design services involving concrete and steel bridge, miscellaneous structures, lighting systems, landscape architecture, and regulatory agency permitting.

As major contributors in preparing the technical and price proposal, T.Y. Lin International’s engineers were instrumental in analyzing alternatives and performing studies that resulted in significant roadway and structure design innovations for reducing project costs and bringing value to the Department. Our team’s ability to reduce the maximum bid price to $177 million resulted in savings to the Florida Department of Transportation of over $50 million versus the nearest competitor. These innovations resulted in reducing construction time on the project to 1,300 calendar days, down from the projected 2,000. The design innovations and substantial cost savings also effectively eliminated the “financing” component of the project.