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Details for Benchmark: BH1160

N 30° 09.991 W 089° 44.257 (NAD 83)

Altitude: 9.61

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

Location:
In ORLEANS county, LA View Original Datasheet
Designation:
PIKE RM 3
Marker Type:
reference mark disk
Setting:
mat foundation, concrete slab, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Found after CITO at Ft Pike

Found after CITO event to help clean up the fort. It's a beaut

Pike no 3

[Photos:]
photoPike 3

Stopped by here after work, just long enough to get some markers.

[Photos:]
photoBH1160
photoBH1160 location
Under the cannon where I scraped away some dried grass clippings.

Found 2 of these while taking post-Katrina photos in the area; spoke with a really nice surveyor for a while. The fort really took a beating and surrounding area is a mess. BM in good condition.

[Photos:]
photoBH1160

Found while killing time til Sophie "the geo pup" cleared the area of all muggles so we could grab the nearby cache.
lady dy

Located with the gang.

Found with Joe, Scoot, Anglefly and Brad.

Found it in Good Condition, on a road trip with Southpaw, Scoot the Frog, Monkeybrad, and Anglefly

I found this accidently while visiting Fort Pike State Park. No coordinates needed.

Found this one with daughter, Mountain Mudbug. Made a rubbing of the marker.

[Photos:]
photoBH1160

2-14-03.... Found this one while benchmarking at Fort Pike with Lily Pad. She took a rubbing of this one and of the triangulation disk. This one is embedded in a large concrete slab whose surface is reddish.

[Photos:]
photoBH1160 Fort Pike RM3, LA

Documented History (by the NGS)

01/01/1952 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1952 (PLB) THE STATION IS LOCATED ABOUT 8 MILES SE. OF SLIDELL NEAR THE S. END OF THE NEW RIGOLETS BRIDGE ON U.S. HIGHWAY 90 ON THE LAWN OF THE OLD FORT PIKE AND BETWEEN THE MOAT OF THE FORT AND THE HIGHWAY. A STANDARD CAA 36 INCH ROTATING AIRWAY BEACON FLASHING RED AND WHITE, MOUNTED ON A STEEL FRAME TOWER AND ABOUT 70 FEET HIGH. PIKE RM NO. 3 1952 WAS ESTABLISHED IN THE CONCRETE FOUNDATION OF THE BEACON, DIRECTLY UNDER THE BEACON LIGHT. THE BEACON IS CALLED NEW ORLEANS-ATLANTA AIRWAY BEACON NO. 2.
01/01/1954 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (RAE) THE ORIGINAL DESCRIPTION IS ADEQUATE.
01/01/1963 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (RRG) THE STEEL TOWER SUPPORTING THE BEACON LIGHT OVER R.M. 3 FOR PIKE HAS BEEN TORN DOWN BUT THE CONCRETE BASE REMAINS AND THE MARK HAS NOT BEEN DISTURBED.
01/01/1969 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 23.2 MI E FROM NEW ORLEANS. ABOUT 23.2 MILES EAST ALONG U. S. HIGHWAY 90 FROM THE I 10 OVERPASS OVER U. S. HIGHWAY 90 AT NEW ORLEANS, AT OLD FORT PIKE, 67.5 FEET WEST OF THE STATION MARK, SET ON THE TOP AND ABOUT IN THE CENTER OF A 13 1/2 FOOT SQUARE CONCRETE BLOCK WHICH FORMERLY SUPPORTED A BEACON LIGHT, 113 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, 83 FEET SOUTH OF BENCH MARK C 193 DESCRIBED AND ABOUT LEVEL WITH THE HIGHWAY.
01/01/1970 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 RECOVERED IN GOOD CONDITION.
01/01/1977 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 RECOVERED IN GOOD CONDITION.
01/01/1980 by LADTD (GOOD)
RECOVERY NOTE BY LA TRANSP AND DEV 1980 RECOVERED IN GOOD CONDITION.
01/01/1984 by LA-051 (GOOD)
RECOVERY NOTE BY JEFFERSON PARISH LOUISIANA 1984 RECOVERED IN GOOD CONDITION.
01/01/1985 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985 RECOVERED IN GOOD CONDITION.
01/01/1986 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION.
10/22/1990 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990 37.4 KM (23.2 MI) EASTERLY ALONG U.S. HIGHWAY 90 (CHEF MENTEUR HIGHWAY) FROM THE JUNCTION OF INTERSTATE HIGHWAY 10 IN NEW ORLEANS, AT FORT PIKE HISTORICAL SITE, IN THE CENTER OF A 4.1 M (13.5 FT) SQUARE CONCRETE BLOCK WHICH FORMERLY SUPPORTED A BEACON, 34.4 M (112.9 FT) SOUTHEAST OF THE HIGHWAY CENTERLINE, 20.5 M (67.3 FT) WEST OF TRIANGULATION STATION PIKE, 0.6 M (2.0 FT) ABOVE THE GROUND SURFACE, AND LEVEL WITH THE HIGHWAY.
03/17/1993 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993 37.4 KM (23.25 MI) EASTERLY ALONG U.S. HIGHWAY 90 (CHEF MENTEUR HIGHWAY) FROM THE JUNCTION OF INTERSTATE HIGHWAY 10 IN NEW ORLEANS, NEAR THE CENTER OF A 12 BY 12-FOOT CONCRETE PAD THAT FORMERLY SUPPORTED A BEACON, 34.8 M (114.2 FT) SOUTHEAST OF AND LEVEL WITH THE CENTERLINE OF THE HIGHWAY, 25.5 M (83.7 FT) SOUTH OF BENCH MARK C 193, 24.7 M (81.0 FT) SOUTH-SOUTHEAST OF A WITNESS POST, 20.5 M (67.3 FT) WEST OF TRIANGULATION STATION PIKE RESET, 19.4 M (63.6 FT) SOUTHEAST OF A CHAIN-LINK FENCE, AND 2.9 M (9.5 FT) NORTHEAST OF THE SOUTHWEST CORNER OF THE PAD.
10/18/1994 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1994 (GAS) 37.0 KM (23.00 MI) EASTERLY ALONG U.S. HIGHWAY 90 (CHEF MENTEUR HIGHWAY) FROM THE JUNCTION OF INTERSTATE HIGHWAY 10 IN NEW ORLEANS, NEAR THE CENTER OF A 12 BY 12-FOOT CONCRETE PAD THAT FORMERLY SUPPORTED A BEACON, 34.8 M (114.2 FT) SOUTHEAST OF AND LEVEL WITH THE HIGHWAY CENTERLINE, 25.5 M (83.7 FT) SOUTH OF BENCH MARK C 193, 24.7 M (81.0 FT) SOUTH-SOUTHEAST OF A WITNESS POST, 20.5 M (67.3 FT) WEST OF TRIANGULATION STATION PIKE RESET, 19.4 M (63.6 FT) SOUTHEAST OF A CHAIN-LINK FENCE, AND 2.9 M (9.5 FT) NORTHEAST OF THE SOUTHWEST CORNER OF THE PAD.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in May 1994.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1996.
  • This Tidal Bench Mark is designated as VM 7156 by the Center for Operational Oceanographic Products and Services.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • 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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