North American interlocking towers

NOTE:

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A key to symbols is available.

Canada 4 (1 closed)

Ontario 3

Name	Location	Railroad(s)	Machine	Structure	Notes
Cherry Street	Toronto	TTR, CN, CP	E	T	junction of TTR and CN Kingston and Bala Subdivisions and CP Belleville Subdivision east of Union Station
John Street	Toronto	TTR, CN, CP	E	T	west throat of Toronto Union Station and junctions between CN Oakville and Weston Subdivisions and CP Galt Subdivision west of Union Station
Scott Street	Toronto	TTR	E	T	east throat of Toronto Union Station

Quebec 1 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Val Royal	Montreal	CN	R	O	CN Deux Montagnes line; panel inside depot controlled end of double track and former Cartierville stub; closed June 3, 1995 concurrent with temporary closure of line for reconstruction and re-electrification; razed June 6, 1995
Wellington	Montreal	CN	R	T	south throat of Central Station/Gare Centrale

United States 200 (33 closed)

California 11 (2 closed)

L. A. Area 3 (1 closed)

Name	Location	Railroad(s)	Structure	Notes
Hobart Avenue	Los Angeles	AT&SF, UP	T
Mission Tower	Los Angeles	Amtrak (Metrolink), SP, AT&SF	T	closed August 30, 1996
Redondo Jct.	Los Angeles	AT&SF and UP (ex-LA&SL)	T
Terminal Tower	Los Angeles	Amtrak (Metrolink), SP, AT&SF	T	throat of Los Angeles Union Passenger Terminal

Other 7

Name	Location	Railroad(s)	Structure
"I" Street Bridge	Sacramento	SP	B
Black Point	Black Point	California Northern (ex-NWP)	B
Brazos	Brazos	California Northern (ex-NWP)	B
Elvas	Sacramento	SP	T
Orwood	Orwood	AT&SF	B
Petaluma	Petaluma	California Northern (ex-NWP)	B
Suisun Bay Bridge	Martinez	SP	B

S. F. Bay Area 1 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
16th Street	Oakland	SP		T	closed October 1, 1995
Stockton	Stockton	SP, UP, AT&SF		T

Connecticut 5

Name	Location	Railroad(s)	Structure	Notes
Conn	Old Saybrook	Amtrak	B	Connecticut River bridge -- cabin or tower?
Mystic River bridge	?	Amtrak	B	part-time -- cabin or tower?
Nan	?	Amtrak	B	Niantic River bridge; cabin or tower?
New Haven	New Haven	Metro North (New Haven West), Amtrak (New Haven East)	T	two interlockings sharing two-story building
Walk	South Norwalk	Metro North (Danbury Branch)	T

District of Columbia 1

Name	Location	Railroad(s)	Machine	Structure	Notes
K Tower	Washington	Amtrak		T	Washington Union Station; modernized in 1980s

Florida 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Beaver Street	Jacksonville	CSX, NS, FEC		T

Illinois 45 (8 closed)

Chicago area 35 (6 closed)

Amtrak 4

Name	Location	Railroad(s)	Machine	Structure	Notes
21st Street	Chicago	Amtrak (ex-CUS), CR (ex-PRR), IC (ex-IC and ex-GM&O)	EP	T	crossing and junction; formerly run by C&WI
Harrison Street	Chicago	Amtrak (ex-CUS)	EP	T	Chicago Union Station south throat (surrounded by new post office)
Lake Street	Chicago	Amtrak (ex-CUS)	EP	T	Chicago Union Station north throat
Lumber Street	Chicago	Amtrak		O	controls Roosevelt Road to South Branch Bridge (office; where?)

CSX (ex-B&OCT) 2

Name	Location	Railroad(s)	Machine	Structure	Notes
75th Street (Forest Hill)	Chicago	CSX (ex-B&OCT), BRC, NS/Metra Southwest (ex-Wabash)	M	T	(M, w/pipeline); may be replaced in 1997
South Branch Bridge	Chicago	CSX (ex-B&OCT), IC		B	IC St. Charles Air Line bridge over south branch of Chicago River (bridge cabin)

CSX (ex-CRI&P) 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Bridge 407	Joliet	CSX (ex-CRI&P)		B	bridge cabin

Conrail 1 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Brighton Park	Chicago	CR (ex-PRR, ex-CR&I), CSX (ex-B&OCT), IC (Metra Heritage, ex-GM&O)	M	C	non-interlocked, employees classified as switchtenders; cabin (M, w/pipeline)
Burnham	Calumet Park	CR (ex-PRR), CSS&SB, NS (ex-NKP)	R	C	trailer replaced tower that burned during 1970s; closed September 27, 1995

Elgin, Joliet & Eastern 3

Name	Location	Railroad(s)	Structure	Notes
Barrington	Barrington	EJ&E, UP (ex-C&NW)	T	UP Harvard Subdivision (Northwest Line) crossing -- staffed on demand
Bridge Jct.	Joliet	EJ&E	B	cabin
West Chicago	West Chicago	EJ&E, UP (ex-C&NW)	T	UP Geneva Subdivision (West Line) crossing

Grand Trunk Western 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Blue Island	Blue Island	GTW, CSX (ex-B&OCT), IHB		T	crossing

Illinois Central 2 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Ash Street	Chicago	IC (former Iowa Division), AT&SF, CR (ex-PRR and ex-CR&I), CSX (ex-B&OCT)	R	T	crossing
Bridgeport	Chicago	IC (Metra Heritage, ex-GM&O), IC (ex-Iowa Division), AT&SF	E	B	cabin on no-longer-movable bridge; closed August 21, 1995
Corwith	Chicago	AT&SF, IC/Metra Heritage (ex-GM&O)	E	T	crossing

Indiana Harbor Belt 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Dolton	Dolton	IHB, UP (ex-C&WI, ex-C&EI, CSX (ex-B&OCT), IHB (ex-CR, nee PRR)	M	T	transferred from CR on March 1, 1996 (M)

Metra Electric (ex-IC) 3

Name	Location	Railroad(s)	Machine	Structure	Notes
67th Street	Chicago	Metra (ex-IC)	E	T	South Chicago branch junction
Kensington	Chicago	Metra (ex-IC), CSS&SB		T	junction with Blue Island branch and CSS&SB
Randolph Street	Chicago	Metra (ex-IC)		O	office on platform level of depot

Metra Milwaukee District (ex-CMStP&P) 4 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
A-2 (Western Ave.)	Chicago	Metra/Soo (ex-CMStP&P), UP (ex-C&NW)	EP	T	crossing with UP Geneva Subdivision (West Line)
A-5 (Pacific Jct.)	Chicago	Metra/Soo (ex-CMStP&P)		T	junction between Metra Milwaukee District North and West Lines and and Soo Kingsbury branch
B-12	Franklin Park	Metra/Soo (ex-CMStP&P), WC, IHB	M, R	T	junction and crossings; closed July 8, 1996; formerly staffed by Soo (M, w/pipeline); tower purchased and relocated November, 1996
B-17	Bensenville	Metra/Soo (ex-CMStP&P)	R	T	junction; staffed by Soo
Rondout	Rondout	Metra/Soo (ex-CMStP&P), EJ&E	R	T	Fox Lake branch junction, EJ&E crossing; staffed by Soo

Metra Rock Island District (ex-CRI&P) 5 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
16th Street	Chicago	Metra (ex-CRI&P), IC	E, R	T	IC (Iowa Division and St. Charles Air Line) crossing
Blue Island	Blue Island	Metra (ex-CRI&P)		T	junction, tower also controls CTC Blue Island to Joliet
Englewood	Chicago	Metra (ex-CRI&P), CR (ex-PRR)		T	crossing; closed October 14, 1995; razed same month
Gresham	Chicago	Metra (ex-CRI&P), CRL (ex-CRI&P)		T	junction
Polk Street	Chicago	Metra (ex-CRI&P)		C	La Salle Station throat; inside trailer
Root Street	Chicago	Metra (ex-CRI&P)		T
UD	Joliet	Metra (ex-CRI&P), AT&SF, SP (ex-GM&O)	E	T	next to Joliet Union Station

Metra Southwest District (ex-C&WI, NS) 0 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
47th Street	Chicago	Metra (ex-C&WI)		T	was strictly a dispatcher's office and should not have been in 1995 list; now controlled from Metra's new control center

Norfolk Southern 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Cummings Bridge	Chicago	NS (ex-NKP)		B	Calumet River bridge, also controls Pullman Jct.; bridge cabin or tower?

Union Pacific (ex-Chicago & North Western) 7

Name	Location	Railroad(s)	Machine	Structure	Notes
Barrington	Barrington	UP (ex-C&NW)		O	end of double/triple track; inside depot, part time -- to be remoted to Deval?
CY	Chicago	UP (ex-C&NW), Soo (ex-CMStP&P)		T	junction of UP Kenosha and Harvard subdivisions (North and Northwest Lines) and crossing with Soo Kingsbury line; also controls CTC on UP between Clybourn and Winnetka
Clinton Street	Chicago	UP (ex-C&NW)	E	T	junction of former C&NW divisions near passenger terminal; part time -- to be closed?
Deval	Des Plaines	UP (ex-C&NW), WC (ex-Soo)	E	T	crossings of UP Harvard Subdivision (Northwest Line), C&NW freight cutoff, WC (ex-Soo)
Kedzie	Chicago	UP (ex-C&NW)		T	junction between Geneva Subdivision (West Line) and Rockwell Subdivision
Lake Street	Chicago	UP (ex-C&NW)	E	T	passenger terminal throat
Mayfair	Chicago	UP (ex-C&NW), Metra (ex-CMStP&P)	E	T	Skokie line and Harvard Subdivision (Northwest Line) junction, crossing of Metra/Soo Milwaukee District North Line and Grayland (Metra/Soo and C&NW Skokie line crossing); Mayfair crossing remoted November 16, 1996; tower still controls Grayland for now

Downstate Illinois 6 (1 closed)

Central Illinois 3 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
BJ Tower	Peoria	P&PU		T	dispatcher, bridge and ex-PT crossing
Gilman (CK)	Gilman	IC, TP&W	R	O	inside depot; closed September 4, 1996
Pearl	Pearl	Gateway Western (ex-GM&O)		B	Illinois River bridge (bridge cabin)
Ridgely	Springfield	SP (ex-GM&O), C&IM (M, w/pipeline)	M	T

Northern Illinois (outside Chicago area) 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Rock Island	Rock Island	Iowa Interstate (ex-CRI&P)		B	Mississippi River bridge; bridge cabin -- not verified

Southern Illinois 2

Name	Location	Railroad(s)	Machine	Structure	Notes
Centralia (NY)	Centralia	IC, BN (CB&Q), NS (Southern)	R	O	crossing; inside IC yard office
Mt. Vernon	Mt. Vernon	UP (ex-C&EI), NS, CSX (ex-L&N)		C	crossing; one-story cabin built 1975 -- to have been closed 1994, but verified as active on February 18, 1995

East St. Louis area 4 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
HN Cabin	Rose Lake	CSX (ex-B&O), CR (ex-PRR), A&S	R	T	building is a tower in spite of the term "cabin"
Lenox	Mitchell	UP (ex-MP, nee NYC), Gateway Eastern, NS (ex-Wabash), A&S, SP (ex-GM&O)	E	T
WR	Granite City	TRRA, SP (ex-GM&O), Gateway	EP	T	Eastern (ex-GM&O), NS (ex-Wabash/IT); closed April 23, 1995; razed January, 1996
Wann	Wood River	SP, Gateway Eastern (ex-GM&O)	R	C	cabin; had been scheduled to close February, 1995 but remote-control work postponed indefinitely
Willows	East St. Louis	Gateway Eastern (ex-PRR),	E	T	CSX (ex-B&O), TRRA, NS (ex-Southern)

Indiana 11 (1 closed)

Chicago area 7

Name	Location	Railroad(s)	Machine	Structure	Notes
Calumet	East Chicago	IHB, CSX (ex-B&OCT), EJ&E	M	T	(M)
Grasselli	East Chicago	IHB, EJ&E, CSX (ex-B&OCT)	M	T	(M, w/pipeline)
Griffith	Griffith	EJ&E, GTW	E	T
Hick	Indiana Harbor	CR (ex-NYC), IHB, EJ&E, CSX (ex-B&OCT)	R	T	bridges and junctions
Hohman Avenue	Hammond	CR, IHB, NS	E	T	staffed by CR on behalf of IHB
Indiana Harbor Canal Bridge	?????	IHB, EJ&E		C	opens weekdays for trains -- cabin or tower?
State Line	Hammond	IHB (ex-C&WI), NS (ex-NKP), CSX (ex-B&OCT), EJ&E	M	T	(M, w/pipeline)

Outstate 4 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Bend (HF)	South Bend	CR (ex-NYC)-GT	E	T	Closed July 13, 1996
Drawbridge	Michigan City	Amtrak (CR)		T	bridge plus CTC on Amtrak Michigan line between Porter, Indiana and Kalamazoo, Michigan; manned by CR
Haley	Terre Haute	CR (ex-NYC), CSX (ex-C&EI);	E	T	new tower slated for construction by 1997
IU	Indianapolis	CR (ex-IU, ex-PRR, ex-NYC), CSX (ex-B&O)	EP	T
Spring Hill	Terre Haute	Soo (ex-CMStP&P), CSX (ex-C&EI)	M, R	T	controls crossing and houses Soo Terre Haute line dispatcher's office -- to close 1997?

Iowa 2

Name	Location	Railroad(s)	Machine	Structure	Notes
Burlington	Burlington	BN (ex-CB&Q)		B	Mississippi River bridge (bridge cabin) -- not verified
Sabula	Sabula	Soo (ex-CMStP&P)		B	Mississippi River bridge and short CTC segment; bridge cabin

Kentucky 2

Name	Location	Railroad(s)	Machine	Structure	Notes
Clagg	Louisville	L&I (ex-PRR/CR)		T	bridge, south end; one shift depending on traffic, also controls Louisville & Portland Canal span
RU	Russell	CSX (C&O)		T	no change in sight, says CSX

Louisiana 5

New Orleans 5

Name	Location	Railroad(s)	Machine	Structure	Notes
Clara Street	New Orleans	Amtrak (NOUPT)	R	T	controls passenger terminal trackage, last active brick tower in Louisiana
East Bridge Jct.	New Orleans	IC, NOPB, NS (ex-Southern)	E	T	connections at east end of Huey P. Long Bridge
NOPB Industrial Canal Bridge Tower	New Orleans	CSX (ex-L&N)		T	near drawbridges east of New Orleans -- to be remoted?
Southport	Metairie	IC, NOPB, KCS	E	T	crossings and industrial leads
West Bridge Jct.	Avondale	SP, UP, NOPB		T	connections at west end of Huey P. Long Bridge

Maine 2

Name	Location	Railroad(s)	Machine	Structure	Notes
Tower A	Waterville	BAR		T	west end of yard, controls yard switches and main from Oakland to Northern Maine Jct., 52 miles.
Tower PT	Portland	Guilford (ex-MEC)		T	Rigby Yard (east or north end), controls yard and line to Royal Jct. in Cumberland, 13.3 miles; Tower 1 (west or south end), closed in 1970s or so

Maryland 2 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
AM	Altamont	CSX (ex-B&O)		T	closed December 29, 1995
M	Mexico	CSX (ex-B&O)	R	T	east end Cumberland yard; closed July 15, 1996
Viaduct Jct. (ND)	Cumberland	CSX (ex-B&O)	M	T	(M, w/pipeline)
WB	West Brunswick	CSX (ex-B&O)		T

Massachusetts 6 (1 closed)

Name	Location	Railroad(s)	Structure	Notes
Beverly Draw	Beverly	Amtrak (MBTA, ex-B&M) Ipswich line	B	open two tricks daily
Gloucester Draw	Gloucester	Amtrak (MBTA, ex-B&M) Gloucester branch	B
Manchester Draw	Manchester	Amtrak (MBTA, ex-B&M) Gloucester branch	B	open one trick daily and closed during winter
Saugus Draw	Saugus	Amtrak (MBTA, ex-B&M) Ipswich line	B	open two tricks daily
South Bay	?????	Amtrak (MBTA, ex-NYNH&H)	C	connections and junctions on former New Haven Dorchester Branch; located inside trailer
Tower H	Somerville	Amtrak (MBTA, ex-B&M), Guilford (ex-B&M), CR (ex-B&A)	T	open two tricks/day; closed August 9, 1995
Waltham	Waltham	Amtrak (MBTA, ex-B&M)	T	in addition to local interlocking, operates various interlockings on ex-B&M Fitchburg line between W. Cambridge and Acton

Michigan 7 (2 closed)

Detroit 5 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Beaubien Street	Detroit	CR (ex-MC), GT	M	T	closed February 28, 1996; razed early May, 1996
Conrail bridge	Detroit	CR (ex-MC)		T	Rouge River bridge, also CP "YD" and CP "MILL"
Delray	Detroit	CSX (ex-C&O), GT, CR (ex-NYC), NS (ex-Wabash)		T
Milwaukee Jct.	Detroit	CR (ex-MC), GT	M, R	T	to close during 1996?
NS Bridge	Detroit	NS (ex-Wabash), GT (ex-D&TSL)		T	Rouge River, also controls GT/CR and CR/NS crossings at Victoria St. and NS/GT crossing at Allen Park
Short Cut Bridge	River Rouge	CR, GT (ex-DT&I)		T

Other 2 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
BO	Kalamazoo	CR (ex-MC) (M)	M, R	T
FN	Trenton	CR (ex-MC), GT		T
Plymouth	Plymouth	CSX (ex-C&O)		O	inside yard office; closed December 3, 1995

Missouri 5 (1 closed)

Kansas City 3

Name	Location	Railroad(s)	Structure	Notes
Hannibal bridge	?????	NS	B	Missouri River bridge -- not verified
Truman Bridge	?????	Soo (ex-CMStP&P), UP (ex-C&NW, nnee-CRI&P) drawbridge	B
Ustick	North Kansas City	BN (ex-CB&Q), NS (ex-Wabash)	T

Other 2

Name	Location	Railroad(s)	Machine	Structure	Notes
Hannibal	Hannibal	NS (ex-Wabash)		T	Mississippi River bridge and BN crossing; tower built 1992 to replace previous cabin
Louisiana	Louisiana	Gateway Western (ex-GM&O)		B	Mississippi River bridge but not adjacent BN crossing (bridge cabin)

St. Louis 0 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Gratiot Street	St. Louis	TRRA, UP, Amtrak	R	T	also handled Grand Avenue TRRA, BN (ex-StLSF, UP, NS (ex-Wabash) junction in St. Louis and TRRA, UP (ex-MP), A&S junction on Illinois side of river; closed August 22, 1996; razed early November, 1996

Nebraska 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Carling Tower	Lincoln	BN (ex-CB&Q)		T	east end BN yard, controls functions of former Hall Tower

New Jersey 10 (1 closed)

Amtrak Northeast Corridor 5 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Dock	Newark	Amtrak (ex-PRR)	EP	T	also controls Passaic River Bridge
Fair	Trenton	Amtrak (ex-PRR)	R	T	closed July, 1996; formerly controlled six interlockings
Hudson	Kearny	Amtrak (ex-PRR)	EP	T
Hunter	Newark	Amtrak (ex-PRR)	EP	T	opposite end of Aldene connection from CR "NK" Tower
Lincoln	Metuchen	Amtrak (ex-PRR)	EP, R	T
Union	Rahway	Amtrak (ex-PRR)	EP, R	T

Conrail 4

Name	Location	Railroad(s)	Machine	Structure	Notes
Hack	Jersey City (?)	CR (ex-PRR)	EP, R	T	Passaic & Harsimus Line movable bridge over Hackensack River, CP Kearny, CP Stock, WA-5 Waverly
NK	Newark	CR (ex-LV)	R	T	controls NJT (ex-CNJ) Raritan Line, CP Townley, CP Roselle Park, CP Aldene
Trent	West Trenton	CR, SEPTA (ex-Reading)	R	T	SEPTA storage yard -- slated for closing in 1995 and controlled from SEPTA Wind in Philadelphia, but never happened
Upper Bay	Newark	CR (ex-PRR, LV)	R	B	National Docks Secondary, movable Newark Bay bridge formerly used jointly by PRR and LV

NJ Transit 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Hoboken Terminal	Hoboken	NJT (ex-EL)		T	replaced previous tower on same site

New York 18 (1 closed)

New York City area 17 (1 closed)

Amtrak Hell Gate Line 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Pelham Bay	Bronx	Amtrak (ex-NYNH&H)		T	tower or bridge cabin?

Amtrak Northeast Corridor (ex-PRR) 2 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
F Tower	Long Island City (Queens)	Amtrak (ex-PRR)	EP	T	closed June 4, 1995
Q Tower	Queens	Amtrak (ex-PRR)	EP	T	Sunnyside Yard
R Tower	Queens	Amtrak (ex-PRR)	EP	T	Sunnyside Yard

Long Island Rail Road 14

Name	Location	Railroad(s)	Structure	Notes
Babylon	Babylon	LIRR	T
Brook	Brooklyn	LIRR	T	Flatbush Avenue
Divide	Hicksville	LIRR	T
Dunton	Jamaica	LIRR	T
East New York	Queens	LIRR	T	open as needed
Hall	Jamaica	LIRR	T
Harold	Long Island City	LIRR	T
Jay	Jamaica	LIRR	T
Lead	Island Park	LIRR	T	swing bridge -- tower or bridge cabin?
Nassau	Mineola	LIRR	T
PD	Patchogue	LIRR	T
Queens	Queens Village	LIRR	T
Valley	Valley Stream	LIRR	T
Van	Brooklyn	LIRR	T	Flatbush Avenue tunnel approach, junction, Vanderbilt Avenue Yard, two tricks on weekdays only

Outstate 1

Name	Location	Railroad(s)	Machine	Structure	Notes
LAB (Livingston Avenue Bridge)	Albany-Rensselaer	CR (ex-NYC)		C	drawbridge -- tower or bridge cabin?

Ohio 26 (5 closed)

Cincinnati area 0 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
GK	East Norwood	CSX (ex-B&O), NS (ex-PRR)	E	T	closed September 5, 1995; tower housed first Taylor electric interlocking frame
NA	Ivorydale	CSX (ex-B&O), CR (ex-NYC)		T	closed August 2, 1995

Cleveland area 7

Name	Location	Railroad(s)	Machine	Structure	Notes
Berea (BE)	Berea	CR (ex-NYC)	E	T	to close 1997?
Bridge 184.50	?????	NS (ex-NKP)		B	Cuyahoga River
Bridge 222	?????	W&LE (ex-NKP)		T	Cuyahoga River
Bridge 4	?????	CR (ex-NYC)		T	Cuyahoga River
Bridge 460	?????	CSX (ex-B&O)		B	Cuyahoga River
Drawbridge (DB)	Cleveland	CR (ex-NYC)		T	Cuyahoga River
Quaker (QD)	Collinwood	CR (ex-NYC)		T

Columbus 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Scioto	Columbus	CSX (ex-B&O), CR (NYC)	E	T

Other points 9 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Bay Bridge	?????	CR (ex-NYC)		T	Sandusky Bay bridge
CO	Port Clinton	CR (ex-NYC)		T	drawbridge
F Tower	Fostoria	CSX (ex-B&O), CSX (ex-C&O), NS (ex-NKP)	R	T
HN	Newton Falls	CSX (ex-B&O)		T	tower is part of depot structure
J	Willard	CSX (ex-B&O)		T
JM	Ashtabula	CR (ex-NYC)		T	tower/drawbridge
NS Tower	Lima	CR (ex-PRR), NS (ex-NKP), CSX (ex-B&O)	EM	T	closed June 10, 1995 (M, w/pipeline)
OW	Ohio Jct., Youngstown	CSX (ex-B&O)		T
RU	Lorain	Black River Bridge, NS (ex-NKP)		B	CSX (ex-C&O); closed January 18, 1995
RX	Willard	CSX (ex-B&O)		O	yard office
Rave	Ravenna	CR (ex-PRR)		T	part-time; closed March 13, 1995

Toledo area 9 (1 closed)

Name	Location	Railroad(s)	Structure	Notes
Alexis (N)	Toledo	CR, AA (ex-NYC)	T
CP Maumee	Toledo	CR (ex-NYC)	B	drawbridge
Hallett	Toledo	AA-CSX (ex-TT)	T
Ironville	Toledo	NS (ex-NKP)-CSX (ex-TT)	T
Lower Bridge	Toledo	CSX (ex-TT)	B	Maumee River
Millard Avenue	Toledo	CSX (ex-C&O)	C	ore docks; closed November 20, 1995
Nasby (AV)	Toledo	CR (ex-NYC), NS (ex-TT west side line)	T
Stanley (SA)	Toledo	CR (ex-NYC)	T
Walbridge	Toledo	CR (ex-PRR), CSX (ex-C&O)	T
Walbridge	Toledo	CSX (ex-C&O)	O	yard office

Oregon 1

Name	Location	Railroad(s)	Machine	Structure	Notes
VC	Portland	Portland Terminal, SP, BN (ex-SP&S), UP		T	Portland Union Station

Pennsylvania 21 (6 closed)

Other 9 (3 closed)

CSX, ex-B&O Cumberland-Connellsville main line 3

Name	Location	Railroad(s)	Machine	Structure	Notes
Q	Hyndman	CSX (ex-B&O)	M	T	(M, w/pipeline)
SA	Sand Patch	CSX (ex-B&O)	E	T
VI	Connellsville	CSX (ex-B&O)		O	ex "D" (inside old yard office)

Conrail, ex-PRR main line 3 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
AR	Gallitzin	CR (ex-PRR)	EP	T	closed September 19, 1995
Alto	Altoona	CR (ex-PRR)		T
C (Conemaugh)	Johnstown	CR (ex-PRR)	EP	T
SO	South Fork	CR (ex-PRR)	EP	T	to close 1996?

Pittsburgh area 3 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
East Conway	East Conway	CR (ex-PRR)		T
Glenwood	Glenwood	CSX (ex-B&O)		T
Midland	Midland	???		T	part time -- who operates?
Rochester	Rochester	CR (ex-PRR)	E	T	closed March 28, 1996
UN	New Castle	CSX (ex-B&O, P&LE)		T	closed November 5, 1995

Philadelphia area 12 (3 closed)

Amtrak Harrisburg Line 5 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Cork	Lancaster	Amtrak (ex-PRR)	EP	T
Overbrook	Philadelphia	Amtrak (ex-PRR)	EP	T
Paoli	Paoli	Amtrak (ex-PRR)	EP, R	T
Park	Parkesburg	Amtrak (ex-PRR)	EP	T	had been open only for trackwork or emergencies; finally closed permanently in 1995
State	Harrisburg	Amtrak (ex-PRR), CR (ex-PRR, RDG)	EP, R	O	inside Harrisburg depot
Thorn	Thorndale	Amtrak (ex-PRR)	R	T

Amtrak Northeast Corridor 2

Name	Location	Railroad(s)	Machine	Structure	Notes
North Philadelphia	Philadelphia	Amtrak	EP	T
Zoo	Philadelphia	Amtrak (ex-PRR)	EP	T

CSX 0 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
RG	Philadelphia	CSX (ex-B&O)	R	T	East Side Yard; closed March 29, 1996

SEPTA -- Airport Line 1

Name	Location	Railroad(s)	Machine	Structure	Notes
A	Philadelphia	SEPTA, CR (ex-RDG)		T	new tower (block-like building) built 1984, controls Airport Line, CR access

SEPTA -- Chestnut Hill Line (ex-PRR) 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Chestnut Hill West	Chestnut Hill	SEPTA (ex-PRR)		O	inside station, part time

SEPTA -- Main Line 3

Name	Location	Railroad(s)	Machine	Structure	Notes
Broad	Philadelphia	SEPTA (ex-PRR)	R	O	office inside Suburban Station
Mark	Philadelphia	SEPTA		O	Market Street East station, also controls Vine; new office built 1984
Wayne Jct.	Philadelphia	SEPTA (ex-RDG)		T	tower also houses Wind, controls various interlockings on SEPTA's ex-RDG trackage

SEPTA -- West Chester Line (ex-PRR) 0 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Media	Media	SEPTA (ex-PRR)	EP	O	full-time office inside station, controlled Media, North and South Elwyn; closed 1995

Tennessee 0 (1 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
Leewood	Leewood	CSX (ex-L&N), IC crossing/junction	R	C	one-story building in northeastern Memphis; closed December 2, 1996

Texas 9 (2 closed)

Name	Location	Railroad(s)	Machine	Structure	Notes
#106 (Tower A)	Dallas	UP		T	Dallas Union Terminal
#121	San Antonio	SP		T	yard
#16	Sherman	SP, Texas & Northeastern (ex-T&P), BN	E,R	T
#17	Rosenburg	SP, AT&SF		T
#3	Flatonia	SP	M	T	(M, w/pipeline); closed September 23, 1996
#47	El Paso	SP		T	yard
#55	Fort Worth	UP (ex-T&P, ex-MKT), AT&SF, SP	R	T	closed May 15, 1995; controlled from yard office
#68	Houston	SP		T	yard
#74	Beaumont	UP (ex-T&P)	R	O	inside depot used by Amtrak
#97 (Causeway)	Galveston	AT&SF, SP, UP		O	office
Beaumont (no number)	Beaumont	KCS		T	Neches River bridge and adjacent junctions with SP, AT&SF

Virginia 1

Name	Location	Railroad(s)	Machine	Structure	Notes
Bridge 5	Norfolk	NS (ex-N&W)		T	controls several junctions and a drawbridge (tower off end of bridge)

West Virginia 8

Name	Location	Railroad(s)	Machine	Structure	Notes
D	Grafton	CSX (ex-B&O)		T
HO	Hancock	CSX (ex-B&O)	M	T	(M, w/pipeline)
MK	Rowlesburg	CSX (ex-B&O)	M	T	M&K Jct.
Miller (R)	Cherry Run	CSX (ex-B&O)	M	T	(M, w/pipeline)
NA	Martinsburg	CSX (ex-B&O)	R	C	cabin
Q	Hardman	CSX (ex-B&O)	M	T	(M, w/pipeline)
West Cumbo (W)	Hedgesville	CSX (ex-B&O)	E	T
Z	West Keyser	CSX (ex-B&O)	M	T	(M, w/pipeline)

Machine type symbols:
E	Electric (typically GRS model machine).
EM	Electro-mechanical. This type of machine has a mechanical frame with separate electrical levers that are either electrically or mechanically interlocked with mechanical frame.
EP	Electro-pneumatic (typically US&S model machine).
M	Mechanical frame (old “armstrong” or “strong-arm” levers). The presence of pipeline-operated switches, derails, or signals is indicated when known.
R	All-relay machine. Includes CTC- and “NX” or “UR”-style panels, as well as other more modern variants that lack mechanical locking.
Structure type symbols:
B	Movable bridge cabin, on or next to bridge.
C	Cabin (one-story free-standing building).
O	Office (e. g., yard office or depot building).
T	Tower (building with two or more stories)