US-Mexico trade hit $94.8bn in July, up 27.5% — and trucks can't keep up

US-Mexico trade reached $94.8bn in July, up 27.5% year on year — and the trucks moving it are running out of room. That's the uncomfortable arithmetic behind a quiet shift in cross-border logistics.

Rising volumes and shrinking trucking capacity at the southern border are pushing shippers toward transloading, moving freight between equipment modes or consolidating shipments at the crossing points to squeeze more out of each trailer. What started as a firefighting tactic is becoming furniture.

According to Uber Freight, transloading is turning "from an emergency solution into a structural network element" of US-Mexico supply chains. Translation: it's no longer what you do when something breaks. It's how the network is built.

What does this change for shippers?

The practical question is straightforward. What does this change for anyone moving freight north from Monterrey or south from Texas? Plenty, if the capacity math holds.

A 27.5% annual jump in bilateral trade means the same roads, docks and driver pools are absorbing roughly a quarter more commerce than a year ago. That's not a seasonal wobble you can schedule around. It's a structural step-change in demand for truck capacity at precisely the moment that capacity has thinned.

For shippers, transloading offers a pressure valve. Consolidating cross-border freight lets them move more cargo per border crossing, trim empty miles and reduce exposure to the equipment and driver shortages squeezing the lane. For carriers, it reshuffles where capacity is needed — shorter, denser drayage-style moves near the border rather than long-haul trailers idling in queues.

Forwarders, meanwhile, get a new service to sell and a new operational headache to manage. Transload facilities, cross-dock labour and the choreography of mode swaps all cost money. Someone will pay for it, and it won't be the carrier.

The agreement nobody mentions

Here's the odd part. Uncertainty over the future of Mexico's free-trade agreement with the US has not dented truck border crossings at all. Volumes keep climbing regardless.

That resilience tells you something. Nearshoring demand and established cross-border production networks — automotive above all — don't reroute on policy speculation. Whatever happens to the trade framework, the physical freight is already committed to the corridor.

So shippers are planning around capacity, not around Washington. One might call that pragmatism. Another might call it a bet that the politics sorts itself out before the trucks stop moving.

From workaround to workflow

The Uber Freight framing deserves attention because of what it implies about permanence. Emergency measures get dismantled when the emergency ends. Structural elements get budgeted, staffed and optimized.

If transloading is now part of the network's architecture, expect shippers to lock in transload capacity the way they lock in warehouse space — contractually, and early. The ones who treated it as a temporary patch may find the patch became the quilt while they weren't looking.

The forward signal is clear enough. With trade at record levels and truck capacity moving the other way, expect more cross-border freight to change hands — literally — at the border, and expect rates on constrained lanes to reflect that squeeze until capacity or demand gives ground.