The Underline Non-Motorized Overpass

MARLIN created a conceptual and feasibility analysis to identify, evaluate and recommend potential alignments for a non-motorized overpass to complement the proposed Underline, the country’s longest under-rail linear park.

The feasibility study included:

  • Field review of existing conditions
  • Analysis of existing Right of Way Maps and Survey
  • Horizontal and vertical geometric analysis
  • Coordination with local companies that manufacture pre-fabricated bridges to obtain preliminary cost estimates and engineering specifications
  • A conceptual Right of Way cost analysis of the adjacent properties within the study area
  • Development of design criteria
  • Development of concept alternatives including typical section, plan and profile
  • Preparation of preliminary cost estimates
Project Information


Miami, Florida


Florida Department of Transportation | District 6


Roadway Design
Transportation Planning

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