Lines involved are generally identified by historic division (Div.), subdivision (SD), district (Dist.), or branch (Br.). Where a branch is identified with a railroad and not a name, it typically might be an industrial spur or another line with an uncertain identity.
Electric street or interurban railways are identified by "elec.", those railways generally are not covered here except where "steam" railroads are also involved. The more important electric railways in Illinois were Chicago Aurora & Elgin (CA&E), Chicago North Shore & Milwaukee (CNS&M), and Illinois Terminal (IT).
Some of the more obscure railroads and lines, are described at the bottom of this page.
Several larger cities had multiple interlocking towers. Information has been verified for the Chicago and St. Louis areas. But in other cities, because of historic inconsistencies in naming of interlockings and other factors, the locations are not always certain.
1900 180 Colvin Park IC Iowa Div./C&NW Troy Grove SD 181 Altamont PRR St. Louis Div./B&O Springfield SD 182 Tuscola IC/C&EI/B&O Decatur SD 183 Wood River C&A/NYC Old Line/IT (elec.) 184 Otto IC 185 Rantoul IC 186 Effingham IC/PRR St. Louis Div. 187 Galena IC Iowa Div./CB&Q Br. including drawbridge 188 Sangamon Avenue (Chicago) C&NW 189 Downing (Mackinaw) NYC Peoria & Eastern Line/PRR Peoria Br. 190 Bronson NYC Peoria & Eastern Line/C&EI Brothers SD/IT (elec.) 191 Englewood (Chicago) PRR/CRI&P 192 Strawn WAB Chicago-Decatur/IC Bloomington Dist. 193 Gibson City IC Gilman SD/WAB Chicago-Decatur/NKP LE&W Main 194 Reddick WAB Chicago-Decatur/NYC Kankakee Br. 195 Arcola IC/PRR Peoria Br. 196 Kedzie (Chicago) CB&Q 197 Hollis (Peoria) PT/P&PU/TP&W/C&NW Peoria SD 198 Davis (Cairo) GM&O 199 Streator AT&SF/WAB Streator Br. 200 Carlinville C&A 201 Girard CB&Q Beardstown SD/C&A 202 Cummings Bridge (Chicago) NKP 203 Sterling C&NW Geneva SD/CB&Q Shabbona & Sterling SD 204 15th Street (Chicago) C&WI 205 16th Street (Chicago) C&WI 206 Ridgely C&A/C&IM 207 Athol C&A/IC Peoria SD/IT (elec.) 208 Sycamore CGW/C&NW Troy Grove SD 209 Tamms C&EI/GM&O 210 Holcomb CGW/CB&Q Rockford & Flag Center SD 211 Brighton C&A/CB&Q Beardstown & St. Louis SD 212 Iowa Jct. (Peoria) PT/CB&Q Peoria SD 213 Byron CMSP&P Davenport SD/CGW 214 West Roodhouse C&A Jacksonville Line/CB&Q Beardstown & St. Louis SD 1901 215 Neoga IC/NKP Cloverleaf Dist. 216 Mt. Pulaski IC Gilman SD/IC Peoria SD 217 Oaktown (Karnak) NYC Cairo Br./C&EI Joppa SD 218 Starne (Springfield) IC Gilman SD/WAB Springfield Dist./IT (elec.) 219 JA Tower (West Chicago) EJ&E/C&NW Belvidere SD 220 Hebron CMSP&P Fox Lake SD/C&NW Farm SD 221 Lodge WAB Chicago-Decatur/IC Havana Dist. 222 Toluca Jct. (Custer) C&A Washington Br./RT&N 223 Whitehall C&A Carrollton Line/CB&Q Beardstown & St. Louis SD 224 Scovel (Saunemin) WAB Chicago-Decatur/IC Pontiac Dist. 225 CR Tower (Calumet River) (Chicago) B&OCT 226 Wann C&A/NYC Old Line 227 South Deering (Chicago) C&WI 228 16th Street (Chicago) CRI&P/IC Iowa Div. 229 Fox Lake Draw CMSP&P Fox Lake SD 230 South Joliet C&A 231 Essex WAB Chicago-Decatur/NYC Kankakee & Seneca Br. 232 Godfrey C&A 233 Shattuc B&O St. Louis Div./CB&Q Beardstown SD 234 Odin IC/B&O St. Louis Div. 235 De Kalb C&NW Geneva SD 236 Willows PRR St. Louis Div./B&O St. Louis Div./SR V&C Line/TRRA 237 Lawrenceville Jct. B&O St. Louis Div./NYC Cairo Br. 1902 238 O'Fallon B&O St. Louis Div./L&N Evansville Div. 239 Walnut Jct. C&NW Peoria SD/CB&Q Mendota & Denrock SD 240 Peoria PT/C&NW Peoria SD 241 West Nelson C&NW Geneva SD 242 Sandoval B&O St. Louis Div./IC Clinton Dist. 243 S Tower (Winstanley Park/East St. Louis) TRRA/SR St. Louis Div. 244 C&I Junction CB&Q Aurora SD/C&NW Troy Grove SD 245 Chenoa C&A/TP&W 246 Rockwell Street (Chicago) B&OCT/PRR Panhandle/C&NW Rockwell SD 247 Elsdon (Chicago) IHB Stock Yards Line/AT&SF Br. 248 Lincoln C&A/IC Havana Dist. 249 Buda C&NW Peoria SD/CB&Q Yates City SD 250 Minier PRR Peoria Br./C&A Jacksonville Line 251 Pekin P&PU/PT/NYC Peoria & Eastern Line 252 Mason City IC Havana Dist./C&A Jacksonville Line 253 Cairo Jct. (Bridge Jct.) IC/GM&O 254 Ashland C&A Jacksonville Line/B&O Springfield SD 255 Cherry Valley C&NW Belvidere SD/Rockford & Interurban Railway (elec.) 256 Galena Jct. CB&Q Aurora SD/CGW 257 Polk Street (Chicago) B&OCT 258 Bixby (Milstadt Jct.) GM&O/MP Chester SD 259 Lostant NYC Kankakee Br./IC Amboy Dist. 260 Atlanta C&A/PRR Peoria Br. 261 Pawnee Jct. (Cimic) IC Gilman SD/C&IM 1903 262 Fordyce MP/IC not located 263 Charleston NYC Illinois Div./NKP Cloverleaf Dist. 264 East Alton NYC Old Line 265 Calumet River Drawbridge PRR 266 Lawndale (Chicago) IC Iowa Div./IN 267 Nelson C&NW Geneva SD 268 State Street (Chicago) C&WI 269 52nd Avenue (Chicago) Metropolitan West Side Elevated Railroad (CTA)/CA&E 270 Kankakee Jct. IC/NYC Indiana Div./NYC Kankakee Br. 271 Ashdale CMSP&P Davenport SD 272 Calumet River Jct. (Chicago) PRR possibly part of #104/#394 273 Gilman IC/TP&W 274 Keithsburg M&SL drawbridge 275 Forest Park B&OCT Altenheim SD/CGW/SOO/CA&E (elec.) 276 Mount Olive C&NW Staunton SD/IC Springfield Dist. 277 Chillicothe AT&SF drawbridge 1904 278 Mendota CB&Q Mendota SD/IC Amboy Dist./CMSP&P Rochelle & Southern Line 279 Portage IC Iowa Div./CB&Q Aurora SD 280 River Jct. (Chicago) C&NW Skokie SD/C&NW Weber SD 281 Lake Bluff C&NW Kenosha SD 282 Beech Ridge IC Murphysboro Dist./GM&O 283 Gillespie C&NW Madison SD/NYC Old Line 284 Steward CB&Q Aurora SD/CMSP&P Rochelle & Southern Line 285 Ayres (Plum River/Savanna) CB&Q Barstow SD/CMSP&P Savanna-Moline 286 Collinsville PRR St. Louis Div. 287 North Springfield C&IM 288 North Reddick WAB Chicago-Decatur/IC Tracy Br. 289 Lotus WAB Chicago-Decatur/IC Rantoul Dist. 290 Arthur C&EI/PRR Peoria Br. 291 Woodland Jct. C&EI 292 Pinckneyville MP Pinckneyville SD/IC St. Louis SD 293 Kenney IC Gilman SD/PRR Peoria Br. 294 Pequot AT&SF/C&A Pequot SD 295 Fort Madison AT&SF drawbridge 296 SH Tower (Madison) TRRA 297 Lenox C&A/NYC Illinois Div. 298 Findlay Jct. C&EI 299 McNabb Jct. NYC Kankakee Br./RT&N 1905 300 Glover C&EI/NYC Peoria & Eastern Line/IT (elec.) 301 Coulterville IC St. Louis SD/MP Sparta SD 302 Green Ridge C&NW Madison SD/C&A 303 DeKalb Jct. C&NW Troy Grove SD/CMSP&P Illinois Iowa & Minnesota Line 304 Kedzie (Chicago) C&NW Geneva SD 305 Wilkinson CGW/CMSP&P Illinois Iowa & Minnesota Line 306 Champaign IC/NYC Peoria & Eastern Line/WAB Champaign Br. 307 Dean (Bloomington) NYC Peoria & Eastern Line/NKP LE&W Main/IC Amboy Dist. 308 Ebner CB&Q Barstow SD/CMSP&P Savanna-Moline 309 Pana NYC Illinois Div./C&EI Pana SD/B&O Springfield SD/IC Clinton Dist. 310 Tower JN (Melrose Park) C&NW Geneva SD 311 Tower HM (Elmhurst) C&NW Geneva SD 312 Centreville C&A Pequot SD/EJ&E Illinois River SD deactivated around 1912 313 Farmer City IC Gilman SD/NYC Peoria & Eastern Line 314 Belleville SR St. Louis Div./L&N Evansville Div. 315 Ada Street (Chicago) C&NW 316 Green Street (Chicago) C&NW 1906 317 Valley Jct. TRRA/MP Chester SD/IC St. Louis SD/A&S 318 Upton C&NW Milwaukee SD/EJ&E 319 Manhattan WAB Chicago-Decatur/CMSP&P Illinois Iowa & Minnesota Line 320 Skokie C&NW Skokie SD 321 South Upton C&NW Milwaukee SD/CNS&M (elec.) 322 Delmar NYC Kankakee Br./CMSP&P Terre Haute Div. 323 Momence Jct. C&EI 324 North End Jct. C&EI not located 325 North Jct. (Dupo) MP/TRRA/IC B&C Line/East St. Louis Columbia & Waterloo (elec.) 326 Moline CB&Q Barstow SD-Moline Line/Davenport Rock Island & North Western Railway 1907 327 Lake Erie Jct. NKP LE&W Main/P&PU 328 Christopher CB&Q Beardstown SD/IC Eldorado SD 329 Woodlawn CB&Q Beardstown SD/L&N Evansville Div. 330 Chrisman NYC Cairo Br./B&O Decatur SD 331 Ridge Farm NKP Cloverleaf Dist./NYC Cairo Br. 332 Grays (Grayville) IC Mattoon Dist./NYC Cairo Br. 333 Wyton (Danville) NYC Cairo Br./NYC Peoria & Eastern Line 334 Danville NYC Peoria & Eastern Line/IT (elec.) 335 Forbes (Rockford) CB&Q Rockford & Flag Center SD/CMSP&P Illinois Iowa & Minnesota Line/IC Iowa Div. 336 Sudduth Jct. (Curran) C&A Airline/CP&StL CS&StL Line 337 Knights (Decatur) WAB 338 Carmi L&N Evansville Div./NYC Cairo Br. 339 Cheneyville NKP LE&W Main/CMSP&P Terre Haute Div. 340 Tower A-2 (Western Avenue) (Chicago) CMSP&P/C&NW/PRR Panhandle 341 Bismarck Jct. C&EI Woodland SD 342 Westville (WR) NYC Cairo Br./C&EI Westville SD 343 Mt. Carmel SR St. Louis Div./NYC Cairo Br. 1908 344 Webster TP&W/CMSP&P Terre Haute Div. 345 Enfield L&N Evansville Div./B&O Springfield SD 346 Carter CMSP&P Terre Haute Div./IC Rantoul Dist. 347 Robinson NYC Cairo Br./IC Effingham Dist. 348 Farmdale TP&W/NKP LE&W Main/PRR Peoria Br. 349 Norris City B&O Springfield SD/NYC Cairo Br. 350 Herrin IC Johnston City Dist./MP Marion SD 1909 351 Eldorado NYC Cairo Br./L&N Shawneetown Br. 352 County Line Chicago Wilmington & Vermillion Coal Co./StL&S not located 353 Bernice PRR Panhandle 354 Clinton IA C&NW Geneva SD drawbridge 355 Nachusa C&NW Geneva SD 1910 356 LeClaire (Edwardsville) IT (elec.)/NKP Cloverleaf Dist./C&NW Madison SD 357 Calumet River Drawbridge (Chicago) CSS&SB 358 Bluffs C&NW Geneva SD 359 Caseyville B&O St. Louis Div./East St. Louis & Suburban Railway (elec.) 360 Van Petten C&NW Peoria SD/CB&Q Shabbona & Sterling SD 361 Main Street (Evanston) C&NW Kenosha SD 362 Howe (Depue) NYC Kankakee Br. 363 South Fulton C&NW/CMSP&P Savanna-Moline 1911 364 Flinton MP Chester SD/MP Sparta SD 365 Roots MP not located 366 Chester MP Chester SD/MP Pinckneyville SD 367 Raddle MP Chester SD 368 Howardton MP Chester SD 369 Halsey MP Chester SD 370 Canal (Evanston) C&NW Kenosha SD 371 Wilmette C&NW Kenosha SD 372 Hudgens (Neilson) C&EI/CB&Q Beardstown SD 373 40th Street (Chicago) C&WI/Chicago Junction 374 Avenue IC Gilman SD/C&IM/B&O Decatur SD/IT (elec.)/Springfield Clear Lake & Rochester (elec.) 375 Noble Street (Chicago) C&NW 376 Division Street (Chicago) C&NW 377 Lake Street (Chicago) C&NW 378 West Vienna C&EI/CB&Q Beardstown SD 379 Forman (Ridenhower) CB&Q Beardstown SD/NYC Cairo Br. 380 Vincennes IN B&O St. Louis Div. drawbridge 381 Clinton Street (Chicago) C&NW 382 Carpenter Street (Chicago) C&NW 383 Hobbs NYC not located 384 Humrick CMSP&P Terre Haute Div./NKP Cloverleaf Dist. 385 Rowland (Tallmadge) CMSP&P Terre Haute Div./C&EI Indiana Line 386 Tansey B&O Springfield SD/SB 387 Fayville C&EI/MP Cairo SD 388 Hillsboro NYC Illinois Div./NYC Old Line 389 Seeger (North Des Plaines) C&NW Harvard SD 390 Virden CB&Q Beardstown SD/IT (elec.) 1912 391 Hegewisch PRR SC&S Br. 392 Thebes C&EI/MP Cairo SD 393 Beardstown CB&Q Beardstown SD drawbridge 394 River Branch Jct. (Chicago) PRR replaced #104 1913 395 Valley C&NW Milwaukee SD 396 Walz (Danville/Brewer) C&EI CED SD/CMSP&P Terre Haute Div. 397 Olney B&O St. Louis Div./IC Mattoon Dist. 398 Iles (Jess) IT (elec.)/WAB Springfield Dist. 399 Zeigler Jct. CB&Q Beardstown SD/MP Mt. Vernon SD 400 Walz (Danville/Brewer) NYC Peoria & Eastern Line/CMSP&P Terre Haute Div. 401 Barr (Athens) C&NW Madison SD/C&IM 402 Harlem Avenue CB&Q/C&WT (elec.) 403 Luther (Mason City) C&NW Madison SD/IC Havana Dist. 404 Decatur (Mercer Street) WAB 405 MC Tower (Joliet) CRI&P/NYC Joliet Br. 406 Quincy Jct. (Louisiana) C&A Jacksonville Line drawbridge 407 Portal CB&Q not located 408 Rice CGW 409 Winston CGW 410 Graham (Galesburg) CB&Q Ottumwa SD 411 Kickapoo (Peoria Jct.) C&NW Peoria SD 412 Savanna CB&Q Aurora SD 413 Wood Street (Chicago) C&NW Harvard SD 414 Vulcan MP Ferry Line/GM&O
Some of the more obscure railroads and lines, not covered in the basic pages covering the main lines in the area.
CP&StL Chicago Peoria & St. Louis Railroad
CS&StL Line Springfield-St. Louis
J&H Line Jacksonville-Havana
RT&N Rutland Toluca & Northern Railroad
Main Line Rutland-Toluca-Custer-Magnolia-McNabb-Granville