CSX and CPKC Slash Transit Times on Southeast Mexico Express with Dedicated Train
Event summary
- CSX and CPKC launched upgraded Southeast Mexico Express (SMX) service on May 4, 2026, with dedicated train and faster transit times.
- Transit times reduced by 20-45%, including 1-day faster service between Atlanta and Dallas, and 2.5 days faster between Atlanta and central Mexico.
- New service offers two-day service between Atlanta and Dallas, three-day service from Monterrey, and four-day service from central Mexico to Atlanta.
- Upgrades result from capital investments in track, bridges, and signal infrastructure on the former Meridian & Bigbee Railroad (MNBR).
- Schneider National has already experienced the SMX advantage and looks forward to building on its earlier success in the corridor.
The big picture
The upgrade to the Southeast Mexico Express service reflects a strategic push by CSX and CPKC to enhance their intermodal offerings and compete more effectively with trucking. The investments in infrastructure and the establishment of a direct Class I-to-Class I interchange highlight the growing importance of rail in connecting key markets across North America. This move is part of a broader industry trend towards faster, more reliable freight transportation solutions that can handle increasing demand for cross-border trade.
What we're watching
- Market Expansion
- How the new SMX service will affect market share in the Southeast U.S. and Mexico, particularly in competing with trucking.
- Infrastructure Investments
- The pace at which CSX and CPKC will continue to invest in infrastructure upgrades to maintain competitive transit times.
- Customer Adoption
- Whether the improved transit times and expanded service options will drive significant customer adoption and revenue growth.