The face of the freight car landscape changed in 1995. That’s when railroads began shifting from 100-ton cars (263,000 pounds Gross Rail Load [GRL]) to 110-ton cars (286K GRL). This led freight car manufacturers to design larger-capacity rolling stock. One early example is the Trinity 5,161-cubic-foot capacity covered hopper ❶.
Since the three-bay covered hopper made its debut in 1995, approximately 33,000 have been built. The car is still part of Trinity’s product lineup, and has led to the design of other three- and four-bay covered hoppers, including the 5461, 6351, and 6541. Plants involved in the production of the 5161 covered hopper include Bessemer, Ala.; Greenville, Pa.; Ft. Worth, Texas; Saginaw, Texas; and Monclova, Mexico.
The Trinity 5161 covered hopper has a round roof that helps with the car’s…