PortMiami Tunnel
Tunnel Information

The PortMiami Tunnel improves access to and from the Port, serving as a dedicated roadway connector linking the Port with the MacArthur Causeway (State Road A1A) and I-395. The Tunnel is open to everyone – both cruise and cargo traffic.

Nearly 16,000 vehicles travel to and from PortMiami through downtown streets each weekday. Truck traffic makes up 28 percent of this travel. In addition to providing quicker access for Port-bound trucks and automobiles, the Port Tunnel is designed to improve traffic flow in Downtown Miami.

As part of PortMiami's sustainability initiative, the tunnel reduces idle vehicle time as well as cut on vehicle emissions.

There's no toll – It's free for all!

Visit the PortMiami Tunnel website for traffic information.


Safety First


What you need to know before entering the tunnel:

  • Speed limit is 35 mph
  • Cruise traffic uses left lane
  • Cargo traffic uses right lane
  • Pedestrians and bicycles are prohibited from the tunnel
  • Placarded Hazardous Materials are prohibited
  • Maximum Height 15’0” Maximum Width 8’6”


For more safety tips & information, please download the Cruising the Tunnel  brochure.