North American interlocking towers

Towers as of December 31, 1996

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 ETjunction of TTR and CN Kingston and Bala Subdivisions and CP Belleville Subdivision east of Union Station
John Street Toronto TTR, CN, CP ETwest 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 ETeast throat of Toronto Union Station

Quebec   1  (1 closed)

Name Location Railroad(s) Machine Structure Notes
Val Royal Montreal CN ROCN 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 RTsouth 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) Machine Structure Notes
Hobart Avenue Los Angeles AT&SF, UP T
Mission Tower Los Angeles Amtrak (Metrolink), SP, AT&SF Tclosed August 30, 1996
Redondo Jct. Los Angeles AT&SF and UP (ex-LA&SL) T
Terminal Tower Los Angeles Amtrak (Metrolink), SP, AT&SF Tthroat of Los Angeles Union Passenger Terminal

Other   7

Name Location Railroad(s) Machine Structure Notes
"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 Tclosed October 1, 1995
Stockton Stockton SP, UP, AT&SF T

Connecticut   5

Name Location Railroad(s) Machine Structure Notes
Conn Old Saybrook Amtrak BConnecticut River bridge -- cabin or tower?
Mystic River bridge ? Amtrak Bpart-time -- cabin or tower?
Nan ? Amtrak BNiantic River bridge; cabin or tower?
New Haven New Haven Metro North (New Haven West), Amtrak (New Haven East) Ttwo 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 TWashington 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) EPTcrossing and junction; formerly run by C&WI
Harrison Street Chicago Amtrak (ex-CUS) EPTChicago Union Station south throat (surrounded by new post office)
Lake Street Chicago Amtrak (ex-CUS) EPTChicago Union Station north throat
Lumber Street Chicago Amtrak Ocontrols 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) MT(M, w/pipeline); may be replaced in 1997
South Branch Bridge Chicago CSX (ex-B&OCT), IC BIC 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) Bbridge 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) MCnon-interlocked, employees classified as switchtenders; cabin (M, w/pipeline)
Burnham Calumet Park CR (ex-PRR), CSS&SB, NS (ex-NKP) RCtrailer replaced tower that burned during 1970s; closed September 27, 1995

Elgin, Joliet & Eastern   3

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

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) RTcrossing
Bridgeport Chicago IC (Metra Heritage, ex-GM&O), IC (ex-Iowa Division), AT&SF EBcabin on no-longer-movable bridge; closed August 21, 1995
Corwith Chicago AT&SF, IC/Metra Heritage (ex-GM&O) ETcrossing

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) MTtransferred 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) ETSouth Chicago branch junction
Kensington Chicago Metra (ex-IC), CSS&SB Tjunction with Blue Island branch and CSS&SB
Randolph Street Chicago Metra (ex-IC) Ooffice 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) EPTcrossing with UP Geneva Subdivision (West Line)
A-5 (Pacific Jct.) Chicago Metra/Soo (ex-CMStP&P) Tjunction 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, RTjunction 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) RTjunction; staffed by Soo
Rondout Rondout Metra/Soo (ex-CMStP&P), EJ&E RTFox 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, RTIC (Iowa Division and St. Charles Air Line) crossing
Blue Island Blue Island Metra (ex-CRI&P) Tjunction, tower also controls CTC Blue Island to Joliet
Englewood Chicago Metra (ex-CRI&P), CR (ex-PRR) Tcrossing; closed October 14, 1995; razed same month
Gresham Chicago Metra (ex-CRI&P), CRL (ex-CRI&P) Tjunction
Polk Street Chicago Metra (ex-CRI&P) CLa 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) ETnext 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) Twas 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) BCalumet 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) Oend of double/triple track; inside depot, part time -- to be remoted to Deval?
CY Chicago UP (ex-C&NW), Soo (ex-CMStP&P) Tjunction 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) ETjunction of former C&NW divisions near passenger terminal; part time -- to be closed?
Deval Des Plaines UP (ex-C&NW), WC (ex-Soo) ETcrossings of UP Harvard Subdivision (Northwest Line), C&NW freight cutoff, WC (ex-Soo)
Kedzie Chicago UP (ex-C&NW) Tjunction between Geneva Subdivision (West Line) and Rockwell Subdivision
Lake Street Chicago UP (ex-C&NW) ETpassenger terminal throat
Mayfair Chicago UP (ex-C&NW), Metra (ex-CMStP&P) ETSkokie 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 Tdispatcher, bridge and ex-PT crossing
Gilman (CK) Gilman IC, TP&W ROinside depot; closed September 4, 1996
Pearl Pearl Gateway Western (ex-GM&O) BIllinois River bridge (bridge cabin)
Ridgely Springfield SP (ex-GM&O), C&IM (M, w/pipeline) MT

Northern Illinois (outside Chicago area)   1

Name Location Railroad(s) Machine Structure Notes
Rock Island Rock Island Iowa Interstate (ex-CRI&P) BMississippi 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) ROcrossing; inside IC yard office
Mt. Vernon Mt. Vernon UP (ex-C&EI), NS, CSX (ex-L&N) Ccrossing; 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 RTbuilding 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) ET
WR Granite City TRRA, SP (ex-GM&O), Gateway EPTEastern (ex-GM&O), NS (ex-Wabash/IT); closed April 23, 1995; razed January, 1996
Wann Wood River SP, Gateway Eastern (ex-GM&O) RCcabin; had been scheduled to close February, 1995 but remote-control work postponed indefinitely
Willows East St. Louis Gateway Eastern (ex-PRR), ETCSX (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 MT(M)
Grasselli East Chicago IHB, EJ&E, CSX (ex-B&OCT) MT(M, w/pipeline)
Griffith Griffith EJ&E, GTW ET
Hick Indiana Harbor CR (ex-NYC), IHB, EJ&E, CSX (ex-B&OCT) RTbridges and junctions
Hohman Avenue Hammond CR, IHB, NS ETstaffed by CR on behalf of IHB
Indiana Harbor Canal Bridge ????? IHB, EJ&E Copens weekdays for trains -- cabin or tower?
State Line Hammond IHB (ex-C&WI), NS (ex-NKP), CSX (ex-B&OCT), EJ&E MT(M, w/pipeline)

Outstate   4  (1 closed)

Name Location Railroad(s) Machine Structure Notes
Bend (HF) South Bend CR (ex-NYC)-GT ETClosed July 13, 1996
Drawbridge Michigan City Amtrak (CR) Tbridge 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); ETnew tower slated for construction by 1997
IU Indianapolis CR (ex-IU, ex-PRR, ex-NYC), CSX (ex-B&O) EPT
Spring Hill Terre Haute Soo (ex-CMStP&P), CSX (ex-C&EI) M, RTcontrols 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) BMississippi River bridge (bridge cabin) -- not verified
Sabula Sabula Soo (ex-CMStP&P) BMississippi River bridge and short CTC segment; bridge cabin

Kentucky   2

Name Location Railroad(s) Machine Structure Notes
Clagg Louisville L&I (ex-PRR/CR) Tbridge, south end; one shift depending on traffic, also controls Louisville & Portland Canal span
RU Russell CSX (C&O) Tno change in sight, says CSX

Louisiana   5

New Orleans   5

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

Maine   2

Name Location Railroad(s) Machine Structure Notes
Tower A Waterville BAR Twest end of yard, controls yard switches and main from Oakland to Northern Maine Jct., 52 miles.
Tower PT Portland Guilford (ex-MEC) TRigby 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) Tclosed December 29, 1995
M Mexico CSX (ex-B&O) RTeast end Cumberland yard; closed July 15, 1996
Viaduct Jct. (ND) Cumberland CSX (ex-B&O) MT(M, w/pipeline)
WB West Brunswick CSX (ex-B&O) T

Massachusetts   6  (1 closed)

Name Location Railroad(s) Machine Structure Notes
Beverly Draw Beverly Amtrak (MBTA, ex-B&M) Ipswich line Bopen two tricks daily
Gloucester Draw Gloucester Amtrak (MBTA, ex-B&M) Gloucester branch B
Manchester Draw Manchester Amtrak (MBTA, ex-B&M) Gloucester branch Bopen one trick daily and closed during winter
Saugus Draw Saugus Amtrak (MBTA, ex-B&M) Ipswich line Bopen two tricks daily
South Bay ????? Amtrak (MBTA, ex-NYNH&H) Cconnections 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) Topen two tricks/day; closed August 9, 1995
Waltham Waltham Amtrak (MBTA, ex-B&M) Tin 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 MTclosed February 28, 1996; razed early May, 1996
Conrail bridge Detroit CR (ex-MC) TRouge 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, RTto close during 1996?
NS Bridge Detroit NS (ex-Wabash), GT (ex-D&TSL) TRouge 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, RT
FN Trenton CR (ex-MC), GT T
Plymouth Plymouth CSX (ex-C&O) Oinside yard office; closed December 3, 1995

Missouri   5  (1 closed)

Kansas City   3

Name Location Railroad(s) Machine Structure Notes
Hannibal bridge ????? NS BMissouri 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) TMississippi River bridge and BN crossing; tower built 1992 to replace previous cabin
Louisiana Louisiana Gateway Western (ex-GM&O) BMississippi 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 RTalso 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) Teast 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) EPTalso controls Passaic River Bridge
Fair Trenton Amtrak (ex-PRR) RTclosed July, 1996; formerly controlled six interlockings
Hudson Kearny Amtrak (ex-PRR) EPT
Hunter Newark Amtrak (ex-PRR) EPTopposite end of Aldene connection from CR "NK" Tower
Lincoln Metuchen Amtrak (ex-PRR) EP, RT
Union Rahway Amtrak (ex-PRR) EP, RT

Conrail   4

Name Location Railroad(s) Machine Structure Notes
Hack Jersey City (?) CR (ex-PRR) EP, RTPassaic & Harsimus Line movable bridge over Hackensack River, CP Kearny, CP Stock, WA-5 Waverly
NK Newark CR (ex-LV) RTcontrols NJT (ex-CNJ) Raritan Line, CP Townley, CP Roselle Park, CP Aldene
Trent West Trenton CR, SEPTA (ex-Reading) RTSEPTA storage yard -- slated for closing in 1995 and controlled from SEPTA Wind in Philadelphia, but never happened
Upper Bay Newark CR (ex-PRR, LV) RBNational 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) Treplaced 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) Ttower 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) EPTclosed June 4, 1995
Q Tower Queens Amtrak (ex-PRR) EPTSunnyside Yard
R Tower Queens Amtrak (ex-PRR) EPTSunnyside Yard

Long Island Rail Road   14

Name Location Railroad(s) Machine Structure Notes
Babylon Babylon LIRR T
Brook Brooklyn LIRR TFlatbush Avenue
Divide Hicksville LIRR T
Dunton Jamaica LIRR T
East New York Queens LIRR Topen as needed
Hall Jamaica LIRR T
Harold Long Island City LIRR T
Jay Jamaica LIRR T
Lead Island Park LIRR Tswing 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 TFlatbush 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) Cdrawbridge -- 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) ETclosed September 5, 1995; tower housed first Taylor electric interlocking frame
NA Ivorydale CSX (ex-B&O), CR (ex-NYC) Tclosed August 2, 1995

Cleveland area   7

Name Location Railroad(s) Machine Structure Notes
Berea (BE) Berea CR (ex-NYC) ETto close 1997?
Bridge 184.50 ????? NS (ex-NKP) BCuyahoga River
Bridge 222 ????? W&LE (ex-NKP) TCuyahoga River
Bridge 4 ????? CR (ex-NYC) TCuyahoga River
Bridge 460 ????? CSX (ex-B&O) BCuyahoga River
Drawbridge (DB) Cleveland CR (ex-NYC) TCuyahoga 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) ET

Other points   9  (2 closed)

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

Toledo area   9  (1 closed)

Name Location Railroad(s) Machine Structure Notes
Alexis (N) Toledo CR, AA (ex-NYC) T
CP Maumee Toledo CR (ex-NYC) Bdrawbridge
Hallett Toledo AA-CSX (ex-TT) T
Ironville Toledo NS (ex-NKP)-CSX (ex-TT) T
Lower Bridge Toledo CSX (ex-TT) BMaumee River
Millard Avenue Toledo CSX (ex-C&O) Core 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) Oyard office

Oregon   1

Name Location Railroad(s) Machine Structure Notes
VC Portland Portland Terminal, SP, BN (ex-SP&S), UP TPortland 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) MT(M, w/pipeline)
SA Sand Patch CSX (ex-B&O) ET
VI Connellsville CSX (ex-B&O) Oex "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) EPTclosed September 19, 1995
Alto Altoona CR (ex-PRR) T
C (Conemaugh) Johnstown CR (ex-PRR) EPT
SO South Fork CR (ex-PRR) EPTto 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 ??? Tpart time -- who operates?
Rochester Rochester CR (ex-PRR) ETclosed March 28, 1996
UN New Castle CSX (ex-B&O, P&LE) Tclosed 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) EPT
Overbrook Philadelphia Amtrak (ex-PRR) EPT
Paoli Paoli Amtrak (ex-PRR) EP, RT
Park Parkesburg Amtrak (ex-PRR) EPThad been open only for trackwork or emergencies; finally closed permanently in 1995
State Harrisburg Amtrak (ex-PRR), CR (ex-PRR, RDG) EP, ROinside Harrisburg depot
Thorn Thorndale Amtrak (ex-PRR) RT

Amtrak Northeast Corridor   2

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

CSX   0  (1 closed)

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

SEPTA -- Airport Line   1

Name Location Railroad(s) Machine Structure Notes
A Philadelphia SEPTA, CR (ex-RDG) Tnew 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) Oinside station, part time

SEPTA -- Main Line   3

Name Location Railroad(s) Machine Structure Notes
Broad Philadelphia SEPTA (ex-PRR) ROoffice inside Suburban Station
Mark Philadelphia SEPTA OMarket Street East station, also controls Vine; new office built 1984
Wayne Jct. Philadelphia SEPTA (ex-RDG) Ttower 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) EPOfull-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 RCone-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 TDallas Union Terminal
#121 San Antonio SP Tyard
#16 Sherman SP, Texas & Northeastern (ex-T&P), BN E,RT
#17 Rosenburg SP, AT&SF T
#3 Flatonia SP MT(M, w/pipeline); closed September 23, 1996
#47 El Paso SP Tyard
#55 Fort Worth UP (ex-T&P, ex-MKT), AT&SF, SP RTclosed May 15, 1995; controlled from yard office
#68 Houston SP Tyard
#74 Beaumont UP (ex-T&P) ROinside depot used by Amtrak
#97 (Causeway) Galveston AT&SF, SP, UP Ooffice
Beaumont (no number) Beaumont KCS TNeches 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) Tcontrols 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) MT(M, w/pipeline)
MK Rowlesburg CSX (ex-B&O) MTM&K Jct.
Miller (R) Cherry Run CSX (ex-B&O) MT(M, w/pipeline)
NA Martinsburg CSX (ex-B&O) RCcabin
Q Hardman CSX (ex-B&O) MT(M, w/pipeline)
West Cumbo (W) Hedgesville CSX (ex-B&O) ET
Z West Keyser CSX (ex-B&O) MT(M, w/pipeline)

Key to symbols

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)