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Florida Department of


South Florida Roads (Miami-Dade and Monroe Counties)


The Port of Miami Tunnel Project consists of three components:

  • Tunnel connection between Watson Island and PortMiami  (Dodge Island)  
  • Connections to PortMiami roadway system
  • Widening of MacArthur Causeway bridge

All three will be designed and built by the project concessionaire.  
Tunnels connecting Watson Island and PortMiami Specifics:

  • Tunnel length 4,200 feet for the tunnel tubes in each direction.
  • Tunnel structure Two tunnels, each containing two traffic lanes, curbs, walkways, ventilation fans and additional safety features. They will connect Watson Island and PortMiami beneath Government Cut, the main shipping channel in Biscayne Bay, moving traffic eastbound (to) and westbound (from) the Port.  
  • Tunnel diameter 41 feet each. 
  • Depth of tunnel The bottom of the tunnels will be approximately 120 feet below the surface of Government Cut at their deepest point.
  • Construction Tunnel Boring Machine (TBM) (See Tunneling Process Fact Sheet.)   

Click here to visit the Port of Miami Tunnel Project website - www.portofmiamitunnel.com


Project At-A-Glance
Start Date
October 2009

Est. Completion
Summer 2014

Construction Cost
$668.5 Million

Lengths and Limits
MacArthur Causway / Watson Island, Port of Miami Road Ways.

FDOT Construction Program Manager
Isa Nunez, P.E.

FDOT Design Project Manager
Teresita Alvarez, P.E.

Owner's Representative
PB Americas

Construction Engineering & Inspection (CEI) Team
PB Americas

MAT Concessionarie, LLC

MOT Public Information Specialist
Liz Fernandez

Stantec Consulting