An importer in Doral had a container of electronics land at Port Miami on a Tuesday, but the buyer's warehouse in Orlando wanted it Thursday and the customs broker hadn't finished the entry yet. The load moved anyway, under bond, straight to a bonded warehouse near Orlando where the entry got filed days later. No duties changed hands at the port. No exam held the truck. That's bonded cartage, and most importers never touch the mechanics of it until a shipment needs to move before clearance is done.
What Bonded Cartage Actually Means
Bonded cartage is the local trucking movement of cargo that hasn't cleared customs, covered by a customs bond instead of a paid duty. The bond guarantees CBP that the cargo will show up where it's supposed to, in the condition it left in, or the bond covers the duties and penalties if it doesn't.
This matters at Port Miami because a lot of transshipment and distribution cargo doesn't clear at the port at all. It clears at a bonded warehouse or foreign trade zone somewhere else, sometimes a different state. Bonded cartage is the leg that gets it there legally, without CBP treating the move as an unauthorized release.
The Three In-Bond Entry Types
CBP recognizes a few different in-bond entry types depending on where the cargo is headed and why. Each one changes what the driver needs on hand and where the load can legally stop.
Each entry type gets filed electronically before the truck moves. The trucker doesn't file it, the customs broker does, but the driver needs proof it exists before the load leaves the terminal.
Who's Allowed to Haul an In-Bond Load
Only a bonded carrier can legally move in-bond cargo. That means the trucking company holds its own CBP-approved bond, separate from the importer's bond, that covers the carrier's responsibility for the cargo while it's in transit and not yet cleared.
A non-bonded carrier that hauls an in-bond load anyway is exposed to the full value of duties and penalties if anything goes wrong, plus CBP scrutiny that can slow down every future move that company tries to run. Brokers and importers check for an active carrier bond before booking the load, not after.
The Paperwork That Follows the Container
The in-bond entry number is the anchor document for the whole move. It ties the cargo to the specific bond covering it and has to match at every checkpoint, from the terminal gate to the destination bonded facility.
- In-bond entry number, generated when the broker files the IT, T&E, or IE entry
- Manifest or bill of lading matching the container and seal number on the entry
- Delivery ticket showing the exact bonded destination, not a general address
- Proof of the carrier's own bond, current and on file with CBP
A mismatch between what's on the entry and what's on the truck is one of the fastest ways to trigger a hold. The seal number on the container has to match the number typed into the entry, down to the character.
Custody, Seals, and Who Eats the Loss
Once the container leaves the terminal under an in-bond entry, the carrier holds custody of cargo that technically still belongs to CBP's jurisdiction until it clears somewhere. The seal stays intact from the moment it leaves the vessel discharge point until it reaches the bonded destination and gets broken under supervision there, not before.
What Goes Wrong on In-Bond Moves
Most problems trace back to timing gaps between when the entry gets filed and when the truck rolls. A broker files an IT entry expecting pickup that afternoon, the truck gets delayed a day at the terminal, and now the entry's clock is running against a load that hasn't left the port yet.
The other recurring issue is dispatch working off the wrong document. A driver handed a standard delivery ticket instead of the in-bond paperwork will drop the load at whatever address is on the ticket, which might not match the bonded destination on file with CBP. That single mismatch can cost the importer the bond amount plus the duties owed on the whole shipment.
How We Run In-Bond Moves Out of Miami
One A Trucks holds its own carrier bond and dispatches in-bond loads with the entry number, seal number, and destination checked against each other before the truck leaves the terminal. Drivers get the actual in-bond documentation, not a generic bill, and the seal gets photographed at pickup and again at the bonded facility on delivery.
For importers moving cargo through Port Miami to a bonded warehouse or FTZ outside South Florida, that verification step is the difference between a clean in-bond move and a carrier's bond getting flagged for something a rushed handoff caused.