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Details for Benchmark: KW1814

N 40° 28.717 W 077° 07.783 (NAD 83)

Altitude: 407.76

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In PERRY county, PA View Original Datasheet
Designation:
E 145
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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On top of railroad overpass.

Recovered in good condition...

Note - the abandoned station is still standing, but the W girder mentioned appears to be gone and the tracks shifted (or a set removed & the bridge bed replaced) to the E.

[Photos:]
photoE 145 (KW1814) disk - Newport, PA
photoE 145 (KW1814) setting - view looking S
photoE 145 (KW1814) area - view looking S
photoE 145 (KW1814) plaque on S end of bridge wall

Documented History (by the NGS)

01/01/1941 by CGS (MONUMENTED)
01/01/1966 by CGS (GOOD)
DESCRIBED BY COAST AND GEODETIC SURVEY 1966 AT NEWPORT. AT NEWPORT, 3 RAILS NORTH ALONG THE PENNSYLVANIA RAILROAD FROM THE ABANDONED STATION, 6 1/2 FEET WEST OF THE WEST RAIL OF THE WEST TRACK, SET IN THE TOP OF THE WEST END OF THE NORTH STONE ABUTMENT OF THE RAILROAD OVERPASS FOR STATE HIGHWAY 34, 2.2 FEET WEST OF THE NORTH END OF THE WEST STEEL GIRDER OF THE BRIDGE, AND ABOUT 1 1/2 FEET BELOW THE LEVEL OF THE TRACK.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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