Derby is a tiny town where the original Illinois Southern Rwy and the MR&BT crossed. Once merged, the M-I maintained a 2-track yard at this important location. The Junction is an interchange point between the predominantly east-west Ste Genevieve subdivision and the predominately north-south Bonne Terre (BT) subdivision serving the Old Lead Belt.
The layout has a run-around and a 2-track yard with a siding for interchange to the BT sub and serves as the terminus for point-to-point operations. Beyond Derby [off-layout] lies Bismarck, the end of the line for the Ste Genevieve Subdivision.
Typical traffic & shipments…
Limestone and lime products are set out here from Mississippi Lime Company for movement northward on the Bonne Terre sub to the Old Lead Belt, as well as coal from Illinois. Obviously, these cars will be returned empty.
Dolomite from the Valley Dolomite Company in Desloge is shipped eastward to fire the blast furnaces at Granite City Steel in Illinois.
Chat from lead and iron ore milling is used mainly for concrete aggregate, roadstone, railroad ballast and fluxing. The main shippers are St. Joseph Lead Co. and Trap Rock Material & Engineering Co.
Bridge traffic for customers in Arkansas, Texas and Louisiana via the Missouri Pacific interchange at Bismarck.
Derby Jct may also be used as staging of freight or passenger trains originating in Bismarck.