The Marceline Subdivision or "Marceline Sub" is a railway line running about 210 miles (340 km) from Fort Madison, Iowa to Congo, Missouri (near Kansas City) in the United States of America. It is operated by BNSF Railway as part of their Southern Transcon route from Chicago to Los Angeles. The Marceline Sub is a high volume link connecting the Chillicothe Subdivision in the east and the Kansas City Terminal in the west.
This subdivision is mostly double track with only one segment of single track, over the Sibley Railroad Bridge crossing the Missouri River at West Sibley. A third mainline is provided west of Eton, MO and from Hardin, MO to CA Junction by joint operation with Union Pacific and Norfolk Southern respectively. Norfolk Southern and BNSF jointly operate double track from WB Junction to Hardin.
This line has hosted passenger traffic throughout its history; currently Amtrak's Southwest Chief makes stops along the Marceline Subdivision in Ft. Madison, IA and La Plata, MO. La Plata is served by 2 Amtrak Trains per day. #4 from Los Angeles to Chicago and #3 from Chicago to Los Angeles As of 2019, the station at La Plata hosts three virtual railfan cameras which can be used to monitor traffic on the line. There is the East Cam(Default) which points towards Chicago, West cam which points to Kansas City, MO and then there is the 360 cam which was recently installed in April 2019
The Marceline Sub also features connections to two other BNSF subdivisions. The Hannibal Subdivision to St. Louis crosses just west of Ft. Madison (there are connections to this subdivision from the Chillicothe Subdivision) and the Brookfield Subdivision crosses west of Bucklin. Mileposts are counted from Chicago.