50' CNCF 5000 Box Car

Prototype Information

The CNCF 5000 boxcar entered service in the late 1970s, during the Incentive Per Diem (IPD) boxcar boom. U.S. railroads needed more general service cars fast, and many turned to Mexico’s national freight car builder, Constructora Nacional de Carros de Ferrocarril (CNCF). CNCF delivered a rugged 50-foot, 70-ton boxcar with 5,000 cubic feet of capacity, able to haul everything from paper to packaged goods. Railroads and leasing companies put nearly 1,500 of them to work across the United States.

Through the 1980s, CNCF kept building the 5000 for Mexico’s national railways, adding thousands more cars to the North American fleet. The design stood out with triangular door-post supports, wrapped end sheets, and sharp sill notches near the stirrups—details that made the car instantly recognizable on the rails.

Many CNCF 5000s still roll today, serving Class I railroads and short lines, often wearing new paint but keeping their original bones. Their durability and capacity have kept them relevant long after the IPD era ended.