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Details for Benchmark: KY0133

N 40° 48.150 W 080° 07.600 (NAD 83)

Altitude: 915.92

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

Location:
In BUTLER county, PA View Original Datasheet
Designation:
A 202
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found in Harmony while caching.

Found this neat benchmark while in the area.

[Photos:]
photoKY0133 benchmark

like most of these marks i have driven by them for years but never knew about them. This is a cool old bridge, i never knew it was an old bridge.

mark is in good shape

The mark is in good condition at N 40° 48.137 W 080° 07.587.

[Photos:]
photoKY0133(A 202) - Harmony PA
photoKY0133 - Looking N toward mark
photoKY0133 - Looking W from mark

Found for benchmark contest.

[Photos:]
photoKY0133
photoWide View

Found A 202 (PID KY0133) at the base of an abandoned bridge abutment near the tracks in a local town. The marker is in great shape, but the bridge has seen much better days. It was a gorgeous day for a walk - took the 4-legged hoover and had a great time. Found 5 out of 7 marks.

[Photos:]
photoA202

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1954 AT HARMONY. AT HARMONY, AT OVERPASS NO. 352A OF A ROAD OVER THE TRACKS, ABOUT 150 FEET WEST OF CENTER OF CROSSING OF SPRING STREET, SET VERTICALLY IN THE EAST FACE OF EAST END OF NORTH STONE ABUTMENT OF OVERPASS, 6 1/2 FEET NORTH RAIL OF NORTH TRACK AND ABOUT 3 1/2 FEET ABOVE LEVEL OF TRACK.
01/01/1983 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 RECOVERED IN GOOD CONDITION. NEW DESCRIPTION FOLLOWS. IN HARMONY, AT BRIDGE 352A (NOW ABANDONED, THE ROAD DEAD ENDS AT THE BRIDGE), SET VERTICALLY IN THE EAST FACE OF THE EAST END OF THE NORTH STONE ABUTMENT OF THE BRIDGE, 1.9 METERS (6.5 FT) NORTH OF THE NORTH RAIL, 45.7 METERS (150.0 FT) WEST OF THE CENTER OF THE CROSSING OF SPRING STREET. THE MARK IS 1.0 M ABOVE RAILROAD.

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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