Ann Arbor Railroad Interlocking
and branch lines
Table of Interlocking points for Ann Arbor Railroad
Ottawa Crossing - Michigan Central (Belt line) junction point, controlled from Manhattan tower
· At the crossing of the M. C. R. R. at Ottawa Crossing, trains are governed by interlocker as follows: When the arms of semaphore are in a horizontal position, or a red light is shown, danger is indicated, and derailing switch at home signal is open. When the arms of semaphore are in a diagonal position, or white light is shown at night, trains may proceed without stopping for crossing. Trains approaching crossing will not pass distant distant signal faster than four miles per hour. [Central Terminal TT 8 8-7-1898]
· Drawing for this crossing point
Manhattan Junction - (Wheeling & Lake Erie tower)
· At the crossing of the W. & L. E. at Manhattan Junction - when placed vertically T. A. A. & N. M. trains will pass; when horizontally, W. & L. E. trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Manhattan Plant Area - Sanborn Map 1890 era - Ann Arbor in Blue, Toledo and Michigan Belt in Red, Wheeling & Lake Erie in Black
Plant - Ann Arbor; Wheeling & Lake Erie; Pennsylvania, Ohio &
Detroit; Manufacturers Railroad The blue trackage is the original
shop shop and yards of the Annie.
As of 2016 the Ann Arbor RR – WACO is switching all the trackage of the W&LE and PRR on its side of the river.
Boulevard - 'AX' -(Toledo Railroad and Terminal Company tower)
· Boulevard layout - Ann Arbor; Toledo Terminal; Pennsylvania; Pere Marquette Railroads
· Photograph of Boulevard Tower with signal maintainer building
Hallet - 'XN' - Ann Arbor; Michigan Central; Pere Marquette; Pennsylvania; Toledo Terminal railroads
· The property drawing file dates for the (1907) Toledo Terminal, [1901 The Toledo Railway and Terminal Company] drawings show most of the property purchased in 1902 or later for the crossing of the Ann Arbor Railroad track.
· Hallet layout - Michigan Central RR drawing after 1924
· Hallet Interlocking 1974 DTI-AA
Alexis - 'N' - (Michigan Central, Michigan Southern & Lake Shore Tower)
· At the crossing of the Michigan Central and L. S. & M. S. at Alexis Junction - when placed vertically T. A. A. & N. M. trains will pass; when horizontally, Michigan Central and L. S. & M. S. trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Alexis_Interlocking Undated map - Ann Arbor; Michigan Central; Lake Shore and Michigan Southern; Detroit, Monroe and Toledo Electric Railroads [1900-1932]
Federman (Monroe Junction) - [The station is used for the train ride at Monroe County Fair grounds]
· At the crossing of the L. S. & M. S. Railway at Monroe Junction - when placed vertically T. A. A. & N. M. trains will pass; when horizontally, L. S. & M. S. trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Drawing of Federman plant
Diann – 'MX' - (Detroit, Toledo & Ironton Tower)
Presently south end CN, north end IORY, Though line WACO
While cut-off was being constructed as set of crash boards protected the crossing.
· Below pictures are linked to Facebook pages built during 1926 period
1. Tower under construction
2. New Tower Completed
3. Interlock Control Panel
· DT&I drawing 4-1-1927 of interlocking plant
· August 31, 1988 at 1600 Hours the interlocking tower at Diann was automated and the tower closed. The Grand Trunk dispatcher at Pontiac now controls the interlocking system. The operator at Hallet tower controls the trackage between Hallet and Diann, and the operator at Milan controls the trackage between Milan and Diann.
· Link to DT&I OLD TIMERS FACE BOOK additional site for more info
Dundee - 'RN' -
· At the crossing of the L. S. & M. S. Railway at Dundee Junction - when placed horizontally T. A. A. & N. M. trains will pass; when vertically, L. S. & M. S. trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Dundee 1st - Detroit & Lima Northern; Detroit, Toledo & Milwaukee; Ann Arbor Railroads 1899
[ The Detroit, Toledo & Milwaukee was leased by the Cincinnati Northern 1872 to 1902 ]
· Dundee_Interlocking_(DT&I TOWER) crossing AA_- DT&I
· Macon branch to the Bemis-Nogan-Stone Quarry Map
Milan - 'MI' - ([Wabash tower] - NS & WACO) [I.C.C. 1915 Valuation page 1]
· At the crossing of the Wabash Railway at Milan Junction - when placed horizontally T. A. A. & N. M. trains will pass; when vertically, Wabash trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Milan 1st - Wabash and Ann Arbor Railroads 1899
· Photograph of above interlocking tower and depot
· May 26, 1992 Milan Tower (MI) is torn down.
· Original called Ypsilanti Junction 7-29-1878 Public timetable, changed to Pittsfield Junction by 6-22-1884 Public timetable
· Depot and interlocking tower ( little shack to right of diamond)
· At the crossing of the L. S. & M. S. Railway at Pittsfield Junction - when placed horizontally T. A. A. & N. M. trains will pass; when vertically, L. S. & M. S. trains will pass; when diagonally, no trains will pass. [TT 4 8-21-1892]
· Pittsfield proposed 1898 by Ann Arbor R.R. crossing Lake Shore & Michigan Southern ( Pittsfield Junction )
Penn Central instruction from Timetable No. 1 April 28, 1968
STOP. Proceed indication -- Derails in non-derailing positions. Derails are time-locked. Permission must be obtained from Ann Arbor RR before operating lock. Normal position for derails is for Ann Arbor R. R.
· Stop gates installed and interlocking plant removed from service along with signals by 8/7/2015
South Lyon - 1880s
· A junction point and interchange with the Detroit, Lansing and Northern also with Michigan Air Line Division of the Grand Trunk Railroad.
· Drawing of junction point with Detroit, Lansing and Northern (Michigan Air Line Railroad drawing)
· Newspaper articles indicate that T, A A & N M built a depot and turntable; depot was moved once – no map of locations. There was a two two track interchange with D&LN both connecting to connecting with the D&LN. The newspaper list siding going to a mill, no location given.
Hamburg - Michigan Air Line depot
· Connecting track to Michigan Air Line Railroad, originally used for interchange and to get trains to Hamburg Junction (Lakeland area.) This drawing shows after Lakeland trackage build, interchange still in place.
Lakeland ( Hamburg Junction ) - 'HU' -
· Hamburg Junction 1st - Michigan Air Line [ MAL ] 1896
· Photograph as built interlocking tower and depot
Ann Pere ( Howell Junction ) - 'HO' -
· In the case of Toledo, A. A. & N. M. Ry. Co. vs Detroit, L. & N. R. R. Co., 62 Mich., 564, the objections to the petition held well taken were:
o That it showed no effort to obtain the property by agreement, before taking steps to condemn.
o That it sought to obtain greater rights than the law allows to be condemned
o That it did not properly describe the property sought to be condemned
§ Pinckney Dispatch December 8, 1887 -- The memory of the famous “Howell Railroad war” is still green in the hearts of many Michigan people. The Toledo & Ann Arbor Co. cut under the track of the Detroit, Lansing & Northern near Howell and a the work was done to suit the latter company a row ensued that resulted in the stoppage of trains, tearing up the tracks and lots of lawsuits. Later, the managers of the two roads got to a better understanding of each other, and it was decided to put a good bridge at the crossing. This work was begun this fall and pushed to the fullest extent and at great cost, but it has now been found that it is impossible to complete the work owing to water and quicksand. Now the Toledo & Ann Arbor folks have changed the route of their road and cross the other road at grade nearer to Howell. An interlocking switch is to be put in so that trains can pass without stopping. It has been a costly bit of engineering.[Brighton Argus]
· At the crossing of the D. L. & N. at Howell Junction - See rule governing Interlockers. [Rules Interlockers 1]
· Drawing of know right of ways for the Ann Arbor Railroad - three routes are know
· Howell Junction 1st interlock plant proposed 1896 - original crossing was a underpass (D&LN - Detroit & Lansing Northern [over]) (AA - Ann Arbor [under])
· Photographs of Annpere Interlocking Tower second tower, first burned with depot
Durand (GTW & STATE of MICHIGAN)
Original interlocking was by flagman at each interlock point (4 diamonds), was later changed over signal controls signal lights at each point. Over the years as things changed now 2 diamonds at one place, for one railroad crossing instead of 3 railroad crossings.
Corunna - ( GTW - Durand - 'BY' )
· At the crossing of C. & G. T. and D. G. H. & M. - Enginemen will blow four short blasts of whistle after coming to full stop, and will not proceed until danger signal at crossing is lowered. [TT 4 8-21-1892]
· D. G. H. & M., G. T. W., G. T. "Y" are governor by gates [TT 99 4-26-1925]
Owosso Junction - 'SW' -
· Michigan Central at Owosso Junction - T. A. A. & N. M. trains will cross when semaphore is turned parallel to T. A. A. & N. M. tracks. [TT 4 8-21-1892]
· M.C. Interchange track, when target is horizontal A. A. trains may pass. M. C. main track, when target parallels A. A. main track, or white light is shown at night, A. A. trains may pass. [TT 99 4-26-1925]
Penn Central Timetable No. 1 April 28, 1968
Saginaw branch - Color light target - Green light - STOP - Proceed indication -- Green light. Normal position of signal is for Ann Arbor RR
Saginaw spur track - Target - Target vertical - STOP - Proceed indication -- Target vertical. Normal position of target is for Ann Arbor RR.
Michigan United Traction Company had diamond across the Ann Arbor
Railroad at or near  Corunna Avenue and Smith Street,  Corunna
Avenue and Oakdale Street, in  Washington Street crossing.
These crossings used half-interlocking type of protection.
· Map of Junction with Grand Trunk Western - was original connecting point for the Toledo, Ann Arbor & North Michigan for the northern division. Beginning of running rights for the Toledo, Saginaw and Muskegon Railway to Ashley [later GTW].
Alma - 'DG' -
· At crossing of S. V. & St. L. R. R. - When the target is placed horizontally, S. V. & St. L. trains will pass; when vertically T. A. A. & N. M. trains will pass; when placed diagonally, no trains will pass. [TT 4 8-21-1892]
· P. M. main track and spur east of passenger station, when target is vertical A. A. trains may pass [TT 99 4-26-1925]
· Drawing of Interlocking plant [Ann Arbor RR; Pere Marquette RR]
St. Louis - original main line from Ithaca going north
· Crossing of St. Louis and Saginaw Valley RR and Toledo, Ann Arbor & North Michigan map
Mount Pleasant - 'MS' -
· The Saginaw & Mount Pleasant RR [PM - CO - CSX] tracks and the Ann Arbor RR industries trackage jointed to form the area know as the 'HUB' there was no interlocking plant, the connecting point is a bridge over the creek at the bottom of map2. There was joint use of trackage after CSX abandoned the track going to Mt. Pleasant. - MAP1 MAP2
Clare - 'B' -
· At crossing of the F. & P. M. at Clare - See rule governing Interlockers [Rules Interlockers 1]
· Drawing of Interlocking plant 1920 - 1940 era
Marion Mile post 208.8 'MN'
· Junction with Manistee & Grand Rapids [Michigan East & West] 1907 – 1915
Cadillac - `CN' - Mile post 226.5 [See I.C.C. Valuation page 1]
· At crossing of the G. R. & I. at Cadillac - See rule governing Interlockers [Rules Interlockers 1]
· Cadillac tower crossing Grand Rapids & Indiana (PRR), Fire 1-24-1926, Changed mechanical to electrical operation 5-1962, Closed 10/3/1963, Removed diamond 5-1969
· All trains will stop at crossing of G. R. & I. leading to Cummer's Lumber Yards, 1/4 mile north of Cadillac station, and not proceed until gate is property set. [TT 4 8-21-1892]
· Murphy & Diggins, Cummer & Diggins, G. R. & I. spur are governor by gates [TT 99 4-26-1925]
· All trains will come to a full stop before crossing the Cadillac & North-Eastern spur, 1 mile north of Cadillac station, and not proceed until gate is properly set.
· Cadillac Tower closed October 9, 1963
· Later State of Michigan removed Pennsylvania RR trackage from interlocking plant to through downtown Cadillac area leaving yard and leaving trackage north, connection to the Ann Arbor was done via the the 'belt line'.
Mile Post 234 - Cummer & Diggins Railroad a narrow gauge logging operation crossed in these general area protected by crash broads. [See I.C.C. Valuation drawing]
Mile Post 256 – Manistee & North Eastern crossed under the Ann Arbor with interchange made at Glengarry on on M&NE.
Copemish - 'CO' - Mile post 267.58 [ICC 1915 Valuation drawing]
· At crossing of the M. & N. E. Railroad at Copemish - Position of Gate will indicate right to pass. [TT 4 8-21-1892]
· M. N. E. crossing is governor by gates [TT 99 4-26-1925]
· Map of Copemish showing Manistee & North East Eastern with Ann Arbor Railroads
o The Arcadia and Betsey River Railroad Junction in the Ann Arbor Railroad just north of Copemish and interchanged cars and turned engines in Copemish.
o The Manistee & North Eastern abandoned trackage thru Copemish in early 1930s, the Ann Arbor RR retained the M&NE trackage in Copemish which had customers with service.
o The Arcadia and Betsey River abandoned trackage from Henry to Copemish which was leased from Ann Arbor Railroad From 12-12-1896 until 1937, the Ann Arbor RR removed its trackage.
o Map of Henry interlock plant in 1900 showing Manistee & North Eastern; Arcadia & Betsey River; Chicago & West Michigan (later PM, C&O) Railroads
Thompsonville - 'MO' - Mile post 270.39
· Thompsonville Interlocking Plant Drawing crossing Pere Marquette RR 1941
· Thompsonville - Ann Arbor RR Depot - Interlocking tower - Pere Marquette RR depot picture
Henry F. Burger 11-18-2008, 12-2-2008, 8-4-2009