VGM and Overweight Container Rules at PortMiami: What Shippers Must Know in 2026

Every container exported through PortMiami or Port Everglades must have a Verified Gross Mass (VGM) submitted before it can be loaded, and any container that exceeds Florida highway weight limits needs a special permit to move by truck. Miss either requirement and your box gets rolled to a later vessel or your drayage driver is turned away at the scale. This guide explains both rules as they stand in 2026 and how to keep heavy loads moving. Go Freight’s asset-based drayage team manages VGM submission and overweight permitting so shippers do not absorb the delay.

What is VGM and who is responsible?

Under the SOLAS convention, the shipper named on the bill of lading must provide the container’s Verified Gross Mass — the combined weight of the cargo, dunnage, and the empty container — to the ocean carrier and terminal before loading. There are two accepted methods: weigh the packed, sealed container on a calibrated scale (Method 1), or weigh each item and add the tare weight printed on the container door (Method 2). The VGM must be submitted in writing, signed by an authorized person, and transmitted in time for the terminal’s stowage planning. If the VGM is missing, the terminal will not load the box — full stop.

Common VGM mistakes

Shippers routinely rely on estimated cargo weights, forget to include pallet and dunnage weight, or use the wrong tare weight for a substituted container. Any of these can produce a VGM that fails the terminal’s tolerance check against the crane scale, flagging the container for a re-weigh fee and a missed cutoff. Working with a drayage partner that weighs on a certified scale at pickup removes the guesswork.

Overweight container limits on Florida roads

A standard five-axle truck in Florida is generally limited to 80,000 pounds gross combination weight without a permit. Because a loaded 40-foot container plus the chassis and tractor can easily approach or exceed that, heavy import and export loads often require an overweight permit from the Florida Department of Transportation to travel legally from the terminal to the warehouse. Port-area corridors around PortMiami and Port Everglades have specific routing, and some loads need a heavy-haul chassis such as a tri-axle or a specialized configuration to spread the weight legally.

Why the chassis matters

The type of chassis under your container directly affects whether a heavy load is legal. A tri-axle or spread-axle chassis distributes weight across more axles, raising the legal limit without a permit in some cases. If you are new to how the equipment works, our explainers on container chassis and securing a container to a chassis cover the basics. Chassis availability and the associated chassis-split fees in Miami also influence which equipment you can realistically get for a heavy move.

How to keep heavy loads moving

Plan the weight before the container is packed, not after it lands. Confirm the VGM method you will use and who will sign. If the load will be overweight on the road, arrange the permit and the correct chassis in advance, because same-day permitting is not guaranteed and terminals will not hold your box while you scramble. Finally, use a carrier that can weigh at pickup, file the VGM, and pull the overweight permit as a single service — that integration is where an asset-based provider saves days. For genuinely oversized or super-heavy cargo, a drayage move may not be enough; those loads cross into heavy-haul territory with escort and routing requirements of their own.

Frequently asked questions

Who submits the VGM, the shipper or the carrier?

The shipper named on the bill of lading is legally responsible, though a freight partner can prepare and transmit it on the shipper’s behalf.

What happens if a container is overweight without a permit?

The driver can be fined, the load can be held at the scale, and you lose the terminal appointment — often triggering demurrage while the load waits.

Can Go Freight handle both VGM and overweight permits?

Yes. Because Go Freight owns its drayage fleet and chassis, it can weigh at pickup, submit the VGM, and arrange overweight permitting in one coordinated move.

Move heavy containers without the delays

Go Freight weighs, permits, and drays overweight containers at PortMiami and Port Everglades with its own equipment. Call (786) 445-0150 or email rates@go-freight.ai for a compliant heavy-container quote.