Canadian National 28 Chesapeake and Ohio 12 Chessie System 30 Chicago & Eastern Illinois 6 Chicago and Illinois Midland 8 Chicago and North Western 26 Chicago Burlington & Quincy 12 Conrail 31 Cotton Belt 3 CSX 74 Denver and Rio Grande Western 15 Detroit, Toledo and Ironton 6 Erie 1 Family Lines System 12 Florida East Coast 10 Frisco 5 GATX 9 Great Northern 21 Illiinois Central Gulf 6 Illinois Central 6 Iowa Interstate 7 Kansas City Southern 5 Louisville and Nashville 6 Milwaukee Road 15 Missouri Pacific 10 Missouri, Kansas, Texas 3 Norfolk and Western 25 Norfolk Southern 105 Penn Central 17 Reading & Northern 4 Richmond, Fredricksburg and Potomac 6 Rock Island 14 Santa Fe 12 Soo Line 17 Southern 20 Southern Pacific 19 TTX 25 Union Pacific 93 Wabash 2 Wheeling & Lake Erie 2