shipping containers stacked in a port

How ocean containers can expand domestic intermodal capacity

As truckload rates rise and 53-foot domestic intermodal capacity tightens, 20- and 40-foot ocean containers returning to port can provide a practical rail alternative for dense freight.

By Zach Martin, Senior Vice President, Intermodal, Odyssey Logistics

Truckload capacity is tightening. Higher fuel costs and a smaller available driver pool are pushing rates upward, prompting more shippers to shift eligible freight to intermodal. That shift is putting additional pressure on domestic intermodal networks, particularly on traditional 53-foot containers in high-demand lanes.

For shippers with the right freight moving toward port markets, there is another capacity source worth considering: 20- and 40-foot ocean containers returning inland freight to the coast.

Through Odyssey Logistics’ Domestic Repositioning Program (DRP), these containers can become an additional domestic intermodal option rather than returning to port empty.

Ocean containers headed back to port sit mostly empty

Import-heavy markets create a surplus of ocean containers that must return to port. This return trip is an underused source of domestic rail capacity.

Many inland markets receive substantially more imported freight than they export. Steamship lines move loaded 20- and 40-foot containers from ports to inland destinations, then must reposition those containers back to port for their next international voyage. Too often, that return trip happens empty.

An empty repositioning move costs the carrier money and occupies rail and drayage capacity. Odyssey’s Domestic Repositioning Program puts that return move to work by matching eligible domestic freight with ocean containers already positioned inland and headed back toward port markets. Odyssey manages the equipment, rail line-haul, and drayage at both ends as one coordinated shipment.

The result is a practical exchange of value:

  • Steamship lines reduce the cost of repositioning empty equipment
  • Shippers gain access to container capacity that may not otherwise be available through traditional domestic intermodal channels, often at more cost-effective rates than standard 53-foot containers
  • Freight moves toward port markets using an established rail-and-drayage network

Which freight is best suited to 20- and 40-foot ocean containers?

Dense, durable freight fits ocean containers best.

Not all freight is suitable for domestic repositioning. The freight that works best in a 20- or 40-foot container “weighs out before it cubes out.” In other words, it reaches the container’s weight limit long before it uses up the available interior space.

The strongest candidates tend to be dense, durable products, such as:

  • Agricultural commodities, including rice, sugar, and beans
  • Machinery and heavy parts
  • Tile, fasteners, and other building products
  • Canned goods
  • Cementitious materials
  • Certain metal products

Lightweight, high-cube freight, such as apparel, generally needs the extra interior volume of a 53-foot container and is a weaker fit here. Commodity, packaging, origin, destination, and delivery timing all factor into whether a specific lane makes sense.

What the Domestic Repositioning Program offers shippers

Feature What it means for your freight
Container access
Draws on Odyssey’s relationships with steamship lines and equipment providers for 20- and 40-foot containers
Rail coordination
Direct Class I railroad contracts manage the line-haul move
Delivery
Full door-to-door delivery at destination
Pricing
Competitive rates driven by the carrier’s own repositioning savings
Visibility
Tracking and status updates from pickup through port return
Single point of contact
One Odyssey team manages the shipment start to finish

Intermodal brings lower costs and a different service profile

Intermodal generally costs less than truckload, but it also runs on a longer, less precise transit window.

Intermodal is less expensive than truckload because it spreads freight across more capacity per move and carries different fuel and labor economics. This is true for intermodal generally, but also for Odyssey’s DRP program, where container-repositioning savings support competitive domestic pricing. Intermodal’s greater fuel efficiency also introduces ESG benefits.

There’s an important tradeoff, however. Rail moves on a different clock than truckload, and therefore transit times run longer. Shippers should weigh total landed cost and service requirements together before shifting any lane to intermodal.

A practical way to expand your intermodal options

Intermodal will keep absorbing freight as truckload rates stay high, but 53-foot containers are a finite resource. Ocean containers moving back to port offer shippers another path.

Truckload rates show no signs of dropping, and, as more freight shifts to rail as a result, traditional intermodal capacity will keep tightening alongside it. Shippers with dense freight moving toward port markets have another option worth exploring: the ocean containers already returning that way.

Odyssey’s Domestic Repositioning Program turns unused equipment most shippers never see into a working part of their network. If your freight fits the profile, and your lanes point toward the coast, this option can give you back much-needed intermodal capacity in a market that becomes more crowded by the day.

Consult with Odyssey’s intermodal experts about whether your freight and lanes fit a domestic repositioning strategy.

Frequently asked questions

Why is intermodal freight volume rising in 2026?

Several forces are converging at once. Truckload costs have climbed as fuel prices rise and tighter compliance enforcement reduces driver availability. At the same time, import activity has strengthened, retail peak season arrived early and strong, and the U.S. manufacturing cycle is picking back up after a slower stretch. Together, these forces are pushing more freight from truck to rail.

Why is traditional 53-foot intermodal capacity getting tighter?

Shippers are shifting freight from truckload to intermodal at the same time, which increases demand for a fixed supply of equipment and train space. Railroads run scheduled trains of a set length, generally carrying a few hundred containers each, and cannot add extra trains on short notice when a market gets busy. Shippers that want guaranteed allocation need to secure it before the market tightens.

What is Odyssey’s Domestic Repositioning Program for intermodal freight?

Odyssey’s Domestic Repositioning Program (DRP) matches domestic freight with ocean containers that need to move from inland markets back toward port locations. Steamship lines bring far more containers inland than they ship back out in many markets, leaving a surplus that has to return to port for the next international load. Odyssey’s DRP fills that return trip with paying domestic freight instead of sending the container back empty, which lowers the carrier’s cost and creates an additional rail option for the shipper.

When does a 20- or 40-foot container make sense for domestic shipping?

Smaller containers make sense for freight that reaches a container’s weight limit before it needs the interior volume of a 53-foot container. Dense, durable goods such as agricultural commodities, machinery, and building materials are a good fit. Lighter, bulkier freight that needs more interior space, along with shipments requiring precise delivery windows, is usually better suited to other solutions.

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