Every week someone asks us whether they should be moving freight across the border by rail instead of truck. The honest answer is that most of them shouldn’t — and the ones who should are usually paying too much not to. Here’s how to tell which one you are.
Start with the freight, not the mode
Rail is built for freight that is heavy, uniform, and patient. Truck is built for freight that is time-sensitive, varied, or small. At the Laredo crossing both modes work, so the question isn’t “can it move” — it’s which one your product is asking for.
Ask four things:
- How much, how often? Rail starts making sense at carload volume on a repeating schedule. A few pallets a week is a truck lane. A car or more a week is a conversation worth having.
- How heavy per unit? Steel coil, paper rolls, metals, lumber, resin — anything where weight fills the truck before the floor does — is where rail’s per-ton economics show up.
- How fast does it need to be there? A truck can leave this afternoon. Rail moves on the railroad’s schedule, and cross-border rail adds an interchange at the bridge. If a day matters, truck it.
- Where does it go after Laredo? If the answer is “one destination, far away,” rail can carry it most of the way. If the answer is “twelve customers across Texas,” it will end up on trucks anyway — the question is just where it switches.
When rail wins
- Steady inbound programs from northern Mexico plants to US distribution: same product, same origin, every week
- Heavy commodities where the truck weight limit, not cube, sets the load
- Freight that can hold at the border — in bonded storage, with duty deferred — and release to trucks as it sells
- Southbound raw material consolidating at Laredo for the move into Mexico
When truck wins
- Anything with a delivery date this week
- Mixed loads, small lots, or product that changes SKU every shipment
- Origins or destinations that aren’t rail-served (most aren’t)
- New lanes you haven’t proven yet — start on truck, move to rail once the volume is real
The hybrid most shippers actually end up with
The border isn’t a rail-or-truck choice. It’s a place where the two meet. The pattern that works best: product crosses by rail because that’s the cheap leg, lands in Laredo, and leaves by truck because that’s the flexible leg. The transload happens once, at our dock, and the freight can sit in bonded space between the two if the timing or the duty math calls for it.
That only works if the transload point is also the warehouse. If the railcar terminates at a public ramp across town, you’ve added a drayage move and a second handling — and most of rail’s advantage goes with it. Here’s what a spur at the dock saves.
How to actually run the comparison
Don’t compare a rail rate to a truck rate. Compare landed cost per unit, door to door, including the handling on both ends, the dwell, and what the duty timing does to your cash. Rail loses a lot of paper comparisons that it wins on the real invoice, and vice versa.
If you’d like a second set of eyes on a lane, tell us the commodity, origin, destination, and monthly volume. We’ll tell you plainly which way it should move — and if it’s truck-only, we’ll say so.
Related: what a 10-car spur saves · warehousing for Mexican manufacturers · customs bonded classes 3, 4, 8 and 11