Here's the current list. All corrections gladly appreciated! The first few up to the blank line is the Berkshire Spur. Still missing a ton of mile markers. They help non-experts find the grades more easily. So if you see a railroad that you know of below, please make a note of the mile marker.
East-West Section mostly by O-6-O
North-South Section mostly by RussNelson
GPS && CSV formatting from nessman
LAT,LONG,ORIGINAL,CROSSING,LOCATION,T-WAY MP,STATUS,CURRENT USE,NOTES
42.506567,-73.764583,CSX Hudson Line Amtrak ( nyc water level),ug,,B1.4,active
42.487085,-73.696827,CSX Post Rd Br. Amtrak,ug,,B5.2,active
42.482114,-73.628991,Albany-Hudson Fast Line,ug,,B9.4,long gone
42.442596,-73.556997,NYNH&H? Old Chatham
42.410777,-73.534879,CSX Boston Line ( nyc b&a),oh,,B16.3,active
42.412500,-79.426000,NYC Mainline,OG,btw 59 and 60,,active,CSX ,
42.412500,-79.425300,NKP,OG,btw 59 and 60,,active,NS,
42.459800,-79.324200,NYC,?,btw 58 and 59,,abandoned?,,
42.485400,-79.255000,Erie Dunkirk,?,btw 58 and 59,,abandoned,,
42.764400,-78.819600,Erie,UG,btw 56 and 57,,active,Buffalo & Southern,
42.808200,-78.806000,BRP,OG,btw 55 and 56,431.2,active,Buffalo & Pittsburgh,
42.819700,-78.791300,NYC,UG,btw 55 and 56,,abandoned,,Gardenville Yard
42.820200,-78.791400,PRR,UG,btw 55 and 56,,active,NS ,
42.855600,-78.791400,PRR,UG,at exit 54,,active,NS Buffalo Line,
42.876200,-78.792600,LV,OG,just west of Exit 53,,abandoned,,trestle gone
42.895200,-78.767300,DL,UG,btw 52 and 53,,active,NS/DLWR,
42.893400,-78.767400,Erie,UG,btw 52 and 53,,active,NS Southern Tier,
42.894600,-78.767300,LV,UG,btw 52 and 53,,abandoned?,,
42.903000,-78.767000,NYC Mainline,OG,just south of 52,,active,CSX,
42.914900,-78.766500,West Shore,UG,just north of 52,,abandoned,,public road
42.951800,-78.741000,LV,UG,btw 49 and 50 at airport,,abandoned, ,filled in
42.948300,-78.681000,West Shore,UG,btw 48a and 49,416,abandoned,
42.968950,-78.52711,BC&NY,n/a,btw 48a and 49,,unfinished
43.003900,-78.412300,NYC Peanut,UG,48a,401.7,abandoned,,public road / utility
43.018700,-78.118900,NYC Mainline,OG,btw 47 and 48,386.6,active,CSX,
43.045300,-77.747900,B&O Rochester,UG,btw 46 and 47,367.6,active,Roch & Southern,
43.044000,-77.732600,PRR Rochester,UG,btw 46 and 47,366.6,abandoned,,rail trail
43.044700,-77.680400,Erie Rochester,UG,btw 46 and 47,363.9,active,LAL,
43.048200,-77.636000,LV Rochester,UG,btw 45 and 46,362.6,abandoned,,golf cart access
43.014300,-77.469600,NYC Auburn,UG,btw 45 and 46,352.8,abandoned,,rail trail
42.971500,-77.080600,PRR Sodus,UG,btw 42 and 43,332.3,abandoned,,filled in
42.954900,-76.974300,NYC Corning,UG,just east of 42,326.8,active,NS/FGLK,
43.028876,-76.660744,RS&E,OH,,310,abandoned,,
43.036597,-76.637383,RS&E,OH,,308.5,abandoned,,
43.042700,-76.625800,West Shore,UG,btw 40 and 41,307.6,abandoned,,
43.050100,-76.612500,NYC Mainline,UG,btw 40 and 41,306.8,active,CSX,
43.063600,-76.553100,LV,OG,just east of 40 (Weedsport),303.6,abandoned,,between small green billboards
43.071900,-76.515700,West Shore,n/a,parallels Thruway,,abandoned,,
43.086000,-76.415400,RSE ,OG,btw 39 and 40,296.5,abandoned,,
43.086800,-76.406800,West Shore,n/a,parallels Thruway,,abandoned,,
43.088340,-76.390953,RSE,OG,btw 39 and 40,296.4,abandoned,,Center pier and south/rr west abutments visible.
43.090460,-76.31896,NYC,,Warners Travel Plaza,292,abandoned,,A siding that served a brickyard in hillside just north of Warners Travel Plaza
43.112400,-76.260400,DLW Oswego,UG,just east of 39,288.1,active,CSX ,RS
43.109100,-76.197600,NYC / RWO,UG,btw 37 and 38,284.7,active,CSX,
43.093600,-75.745000,LV Camden,,at exit 34,261.3,abandoned,,Abandoned pre-tway
43.112100,-75.659100,NYOW Main,UG,btw 33 and 34,256.8,abandoned,Durhamville,
43.125300,-75.598600,NYC Mainline,UG,btw 33 and 34,253.5,active,CSX,
43.127500,-75.430100,NYOW Rome,UG,btw 32 and 33,244.8,abandoned?,,
43.131200,-75.297200,NYC Mainline,UG,btw 31 and 32,238.0,active,CSX,
43.125300,-75.243700,NYC,OG,btw 31 and 32,235.0,active,MA&N,Bridge labelled "Adarondack RR" oops.
43.129580,-75.302180,New York Railways?,,btw 31 and 32
43.017600,-75.007900,NYC Mainline,UG,btw,,active,CSX,
43.017622,-74.993599,UnMV
43.014864,-74.977180,West Shore herkimer,ug,,219.25,gone
43.011925,-74.793607,West Shore (parallels to east)
42.937938,-74.623564,West Shore fort plain,ug,,198.3,abandoned
42.930890,-74.288778,West Shore schoharie crossing,ug,btwn 28 and 29,178.4,gone (may have shared the NY5S bridge)
42.890096,-74.083477,West Shore,,parallels east,
42.841805,-74.015614,West Shore,OG,parallels west at 26,,abandoned
42.791743,-74.016383,D&H main (cp),oh,,158.9,active
42.774555,-73.986853,CSX Selkirk Br ( west shore),ug,,156.9,active
42.756557,-73.938558,SnHR Fullers-Athens Jct,OG,just west of 25,,gone
42.625845,-73.778787,Norman Kill Bridge D&H Albany main to Kenwood Yd.,,,141.4,
42.551714,-73.782401,D&H Albany Sec. ( cp ) Selkirk to Kenwood,ug,,136.1,active
42.514610,-73.789159,Selkirk-Schodack Landing,UG,at 21A,132.4,active
42.499899,-73.796465,NYC Albany-Selkirk (parallel to south),,,132.0
42.485251,-73.808110,NYC Albany-Selkirk (parallel to north),,,131.8
42.466993,-73.806924,NYC Ravena (parallel to south),,,129.1
42.452375,-73.811020,NYC Ravena (parallel to north),,,126.9
42.405621,-73.818441,NYC West Shore,ug,south of New Baltimore,,125.5
42.243373,-73.892792,CnC,ug,south of 21,113.3
42.072673,-73.974652,NYC Saugerties (visible to east),,south of 20,100.4
41.940529,-74.034893,UnD,ug,south of 19,90.7,active,CMRR
41.939920,-74.035312,NYO&W,ug,south of 19,90.6,abandoned
41.881081,-74.058229,NYC Walkill,ug,,86.1,abandoned
41.765621,-74.132026,New Palz and Poughkeepsie trolley,,,76.3,abandoned
41.691068,-74.077805,NH Maybrook Line,ug,btn 18 and 17,72.8,abandoned
41.532160,-74.075850,Walden & Newburgh Trolley,,,61.6,abandoned
41.454936,-74.064516,Erie Newburgh,UG,btw 16 and 17,55.9,abandoned pre-tway?
41.453035,-74.063357,Erie (Newburgh Short Cut),,parallels south,,abandoned
41.435163,-74.067600,NYO&W,ug,btw 16 and 17,54.7,abandoned
41.430260,-74.067192,Erie (Newburgh Short Cut),,parallels north,,abandoned
41.402618,-74.084216,Erie (Newburgh Short Cut),AG,intersects northbound,,abandoned
41.395996,-74.091989,Erie (Newburgh Short Cut),AG,intersects southbound,51.5,abandoned
41.395996,-74.091989,Erie Newburgh,,high on hill parallels south,,abandoned
41.362888,-74.103951,Erie,,two lines switch places and closely parallel on west,,abandoned
41.349103,-74.115113,Erie,,both lines move away to west,,abandoned
41.339120,-74.117209,Erie,,both lines visible across wetland to west,,abandoned
41.312005,-74.123906,Erie,ug,interchange ramp of 16,parallels south
41.299530,-74.137117,Erie,,Newburgh Junction,,44.2
41.172582,-74.187662,Erie,,parallels north,,40.2
41.152346,-74.189557,Erie,,parallels south,,32.3
41.139726,-74.170552,Erie,UG,north of 15,31.8
41.117934,-74.156723,Erie,UG,south of 15 moves away to south,30.0
41.116125,-74.114938,Erie,,parallels to south/east,,27.9
41.112594,-74.098621,Erie,,parallels to north/west,,26.9
41.104044,-74.076849,Erie,ug,,,25.4
41.103688,-74.018453,Erie,og,,,22.3
41.102405,-73.999180,NJ&NY New City,,Just West of Palisades Parkway,21.3,abandoned
41.100746,-73.964409,NYC,og,west of 12,19.5
41.080906,-73.92227,Erie Nyack,at 10,16.6,,abandoned
41.067419,-73.867025,NYC Water Level,ug,Tappan Zee Bridge toll gates,
41.042572,-73.835922,NYCnH Putnam,ug,parallels to the south.