Soo Line GP40 Locomotives,
Including former Milwaukee Road GP40s

In compiling my roster of all Soo Line diesel locomotives, the category hardest to list is the GP40s, especially the ex-MILW units, since all locomotives were assigned new numbers after the 1986 Soo-Milwaukee merger, but not all locomotives were ultimately renumbered.  So, here is a breakdown of what locomotives got what number when all was said and done.  Hope this helps answer any questions that you might have.

GP40s Which Were Renumbered
SOO 4600: ex-SOO 732
SOO 4601: ex-SOO 733
SOO 4602: ex-SOO 734
SOO 4603: ex-SOO 735
SOO 4609: ex-MILW 2006, ex-MILW 186
SOO 4612: ex-MILW 2012, ex-MILW 174
SOO 4648: ex-MILW 2021, ex-MILW 195

GP40s Which Were Not Renumbered
(Numbers in parentheses are numbers assigned,
but not applied to the locomotive before retirement)
SOO 2003: ex-MILW 2003, ex-MILW 183
SOO 2008: ex-MILW 2008, ex-MILW 188
SOO 2010: ex-MILW 2010, ex-MILW 190
SOO 2011: ex-MILW 2011, ex-MILW 199
SOO 2013: ex-MILW 2013, ex-MILW 175
SOO 2014: ex-MILW 2014, ex-MILW 176
SOO 2016: ex-MILW 2016, ex-MILW 178
SOO 2025: ex-MILW 2025, ex-MILW 180
SOO 2026: ex-MILW 2026, ex-MILW 153
SOO 2031: ex-MILW 2031, ex-MILW 158
SOO 2032: ex-MILW 2032, ex-MILW 159
SOO 2033: ex-MILW 2033, ex-MILW 160
SOO 2035: ex-MILW 2035, ex-MILW 162
SOO 2036: ex-MILW 2036, ex-MILW 163
SOO 2038: ex-MILW 2038, ex-MILW 165
SOO 2039: ex-MILW 2039, ex-MILW 166
SOO 2041: ex-MILW 2041, ex-MILW 168
SOO 2045: ex-MILW 2045, ex-MILW 172
SOO 2046: ex-MILW 2046, ex-MILW 16, ex-MILW 2046, ex-MILW 173
SOO 2057: ex-MILW 2057, ex-MILW 17, ex-MILW 2057
SOO 2058: ex-MILW 2058
SOO 2059: ex-MILW 2059, ex-MILW 19, ex-MILW 2059
SOO 2064: ex-MILW 2064
SOO 2066: ex-MILW 2066
(Note: for units listed above, I have no record of what 4600-series
number they were assigned by Soo Line Railroad Company)

GP40s Assigned New Numbers But Not Renumbered
(SOO 4604): ex-MILW 2000, ex-MILW 191
(SOO 4605): ex-MILW 2001, ex-MILW 181
(SOO 4607): ex-MILW 2004, ex-MILW 184
(SOO 4608): ex-MILW 2005, ex-MILW 185; converted to fuel tender 4000 in 1987
(SOO 4616): ex-MILW 2017, ex-MILW 179
(SOO 4617): ex-MILW 2019, ex-MILW 193
(SOO 4618): ex-MILW 2022, ex-MILW 196
(SOO 4621): ex-MILW 2027, ex-MILW 154
(SOO 4622): ex-MILW 2029, ex-MILW 156
(SOO 4623): ex-MILW 2030, ex-MILW 157
(SOO 4625): ex-MILW 2037, ex-MILW 164
(SOO 4627): ex-MILW 2040, ex-MILW 167
(SOO 4628): ex-MILW 2044, ex-MILW 171
(SOO 4634): ex-MILW 2060
(SOO 4635): ex-MILW 2061
(SOO 4636): ex-MILW 2062
(SOO 4637): ex-MILW 2063
(SOO 4639): ex-MILW 2065
(SOO 4640): ex-MILW 2067
(SOO 4641): ex-MILW 2002, ex-MILW 182
(SOO 4642): ex-MILW 2007, ex-MILW 187
(SOO 4643): ex-MILW 2009, ex-MILW 189
(SOO 4646): ex-MILW 2018, ex-MILW 192
(SOO 4647): ex-MILW 2020, ex-MILW 194
(SOO 4649): ex-MILW 2023, ex-MILW 197
(SOO 4650): ex-MILW 2024, ex-MILW 198
(SOO 4653): ex-MILW 2034, ex-MILW 161
(SOO 4658): ex-MILW 2042, ex-MILW 169
(SOO 4659): ex-MILW 2043, ex-MILW 170