The Decatur & Eastern Illinois Railroad (reporting mark DREI) is a Class III[1] American regional railroad that is a subsidiary of Watco operating in eastern Illinois and western Indiana.

[2] In January 2018, CSX Transportation announced that it was seeking offers to buy the Decatur Subdivision and the Danville Secondary Subdivision as part of a system-wide sale of low-traffic routes, and in July, Watco, via the DREI, was identified as the winning bidder.

[3] Following regulatory approval from the Surface Transportation Board,[4] the DREI began operations on September 9.

[5] Commodities on this route are primarily chemicals, plastics, soybeans, and corn.

[6] It interchanges traffic with CSX, the Norfolk Southern Railway, the Canadian National Railway and the Union Pacific Railroad.