Trailhead location for Erie to Pittsburgh Trail crossing at Freeport
| Milepost | Amenity Name | location coordinates | show in Icon List | show on mileage chart | steps | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| PghErie MP23.987 | map Tarentum Park - West (PghErie 24) | 40.5998118, -79.7532601 |  | ||||||||
| PghErie MP21.538 | map East Deer Recreation Parking (PghErie 21.5) | 40.5816649, -79.7769663 |  | ||||||||
| PghErie MP16.414 | map Cheswick - west (Future) (PghErie 16.4) | 40.5405693, -79.8074863 | | ||||||||
| PghErie MP11.531 | map Blawnox Section - Northeast End (PghErie 11.5) | 40.4980074, -79.854709 | | ||||||||
| PghErie MP9.076 | map PWSA - east (future) (PghErie 9.1) | 40.4853745, -79.8881387 | | ||||||||
| PghErie MP8.295 | map Aspinwall Park - east (PghErie 8.3) | 40.4876315, -79.9015551 | | ||||||||
| PghErie MP8.093 | map Aspinwall Park - west (PghErie 8.1) | 40.4889016, -79.904629 |  | ||||||||
| PghErie MP6.209 | map Sharpsburg West (future( (PghErie 6.2) | 40.4927284, -79.9384772 |  | ||||||||
| PghErie MP4.196 | map Millvale Park (PghErie 4.2) | 40.4764042, -79.9682481 | | ||||||||
| PghErie MP3.709 | map PGH northside MP 3 (PghErie 3.7) | 40.4706562, -79.9733852 | | ||||||||
| PghErie MP3.096 | map North Shore by Washington Landng (PghErie 3.1) | 40.4634683, -79.9799507 | | ||||||||
| PghErie MP2.831 | map River Av North Side (PghErie 2.8) | 40.4603766, -79.9821499 |  | ||||||||
| Allegheny MP122.081 | map Deep Hollow (Allegheny 122.1) | 41.3733039, -79.8010597 | | ||||||||
| Allegheny MP123.623 | map Trail Franklin Trailhead (Allegheny 123.6) | 41.3871051, -79.8176166 | | ||||||||
| Allegheny MP96.08 | map Emlenton Parking Lot (Allegheny 96.1) | 41.1785659, -79.7160686 | | ||||||||
| Armstrong MP44.56 | map Kittanning (Armstrong 44.6) | 40.8179773, -79.5197711 | | ||||||||
| Armstrong MP47.532 | map Canfield Parking (Armstrong 47.5) | 40.850847, -79.507262 | | ||||||||
| Armstrong MP71.644 | map Sarah Furnace parking (Armstrong 71.6) | 41.0054819, -79.5859054 |  | ||||||||
| Armstrong MP63.232 | map Redbank Parking (Armstrong 63.2) | 40.9810687, -79.5491937 | | ||||||||
| Armstrong MP59.379 | map Rimer (Armstrong 59.4) | 40.9348546, -79.5232641 | | ||||||||
| Armstrong MP53.877 | map Templeton (Armstrong 53.9) | 40.9195805, -79.4630125 |  | ||||||||
| Armstrong MP51.606 | map Lock and Dam 8 (Armstrong 51.6) | 40.8943502, -79.4758265 | | ||||||||
| Armstrong MP41.435 | map Ford City (Armstrong 41.4) | 40.7768525, -79.527731 | | ||||||||
| Armstrong MP39.064 | map Crooked Creek (Armstrong 39.1) | 40.7490857, -79.5541366 | | ||||||||
| Armstrong MP29.326 | map Schenly (Armstrong 29.3) | 40.6840131, -79.6629196 |  | ||||||||
| Armstrong MP89.963 | map Foxburg - southern end (Armstrong 90) | 41.1394513, -79.6780938 | | ||||||||
| Armstrong MP86.181 | map Parker (Armstrong 86.2) | 41.1017279, -79.6776323 | | ||||||||
| ETP MP-0.115 | map Bicentennial Tower (ETP -0.1) | 42.1389703, -80.0915787 | | ||||||||
| ETP MP0.206 | map State St (ETP 0.2) | 42.1353024, -80.088968 | | ||||||||
| Butler SB MP0.781 | map Laneville by the mill (Butler SB 0.8) | 40.6809518, -79.6898817 | | ||||||||
| Butler SB MP4.484 | map Monroe (Butler SB 4.5) | 40.7080929, -79.7133307 | | ||||||||
| Butler SB MP7.542 | map Sarver fire hall (Butler SB 7.5) | 40.7294228, -79.7474985 | | ||||||||
| Butler SB MP10.499 | map Cabot (Butler SB 10.5) | 40.7665963, -79.766184 | | ||||||||
| Butler SB MP20.678 | map Butler (Butler SB 20.7) | 40.8623565, -79.8918382 | | ||||||||
| Butler SB MP16 | map BonnieBrook (Butler SB 16) | 40.835182, -79.8213306 |  | ||||||||
| Chautauqua MP49.39 | map Plank (Chautauqua 49.4) | 42.294733, -79.4974393 | | ||||||||
| Chautauqua MP51.929 | map North of lake (Chautauqua 51.9) | 42.262341, -79.4941833 | | ||||||||
| Chautauqua MP53.062 | map Mayville (Chautauqua 53.1) | 42.2461948, -79.4948007 |  | ||||||||
| Chautauqua MP53.325 | map Mayville Lakeside Park (Chautauqua 53.3) | 42.2428466, -79.497161 | | ||||||||
| Chautauqua MP63.161 | map Park St - east of Sherman (Chautauqua 63.2) | 42.1628714, -79.585078 | | ||||||||
| map Corry - Hereford Rd | 41.9557743, -79.6395107 | | |||||||||
| map Corry - Plastics Rd | 41.9436958, -79.6413953 | | |||||||||
| map Corry SR426 | 41.9378873, -79.6420193 | | |||||||||
| map Corry - Gates St | 41.917825, -79.6540969 | | |||||||||
| East Branch north MP1.443 | map East Branch SR89 North Trailhead (East Branch north 1.4) | 41.8419199, -79.7010406 | | ||||||||
| MPzero | map Spartonsburg - north | 41.8243619, -79.6861694 | | ||||||||
| map Crawford County Forest Trailhead | 41.6879592, -79.7656496 | | |||||||||
| map McClintock number One historic site | 41.4598196, -79.6915707 | | |||||||||
| map Oil Creek Memorial Landing | 41.4443508, -79.7016188 | | |||||||||
| Oil City MP131.757 | map Justis park northwest corner (Oil City 131.8) | 41.4326975, -79.7086934 | | ||||||||
| Oil City MP129.1 | map Samuel Justis north gate (Oil City 129.1) | 41.4066794, -79.7329717 | | ||||||||
| Oil Creek MP9.475 | map Jersey Bridge (Oil Creek 9.5) | 41.6156781, -79.6585976 | | ||||||||
| MPzero | map Petroleum Center | 41.5159115, -79.6821781 | | ||||||||
| map Hasbrouck Park | 41.6492825, -79.7222163 | | |||||||||
| Bayfront MP4.214 | map PA 955 (Bayfront 4.2) | 42.1534995, -80.0226908 | | ||||||||
| Bayfront MP7.157 | map Trooupe Rd (Bayfront 7.2) | 42.1786072, -79.9770774 | | ||||||||
| Bayfront MP20.552 | map Ripley (Bayfront 20.6) | 42.2703825, -79.7505939 | | ||||||||
| Bayfront MP29.919 | map Barcelona (Bayfront 29.9) | 42.3404761, -79.5959922 | | ||||||||
| Tredway MP3.646 | map Under east end Freeport Bridge (Tredway 3.6) | 40.6669179, -79.6912214 | | ||||||||
| MPzero | map Tredway Milepost 0 | 40.6201264, -79.7048475 |  |
OLC (Open Location Codes) (aka Plus Codes) are a way of encoding location into a form that is easier to use than providing coordinates in the usual form of latitude and longitude. They are designed to be used like street addresses, and may be especially useful in places where there is no formal system to identify buildings, such a street names, number, and post codes.[4]
Since August 2015, Google Maps supports plus codes in the address box.
The Open Location Code website provides an overview. The document An Evaluation of Location Encoding Systems provides a rationale.
Trail Lines are typically entered by tracing satellite imagery to extract latitude/longitude coordinates. The accuracy of these coordinates changes depending on the source of the photo and the precision of placement. I have seem satellite edges mismatched on the order 55 feet. Line work is sometimes extracted from the Open Street Map Project and from Strava heat maps.
>Milepost Known milepost (are placed on the map when they are visible in the satellite image or can be located via to visible features in the image. Other miles posts are extrapolated using calculations along the rail line. Note Railroads have also been known to realign trackage and not move existing mileage markers, only making an annotation on their paper maps.
Distances Above are based on the google map distance between two points along the line work.