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Details for Benchmark: FO0208

N 35° 04.517 W 106° 24.700 (NAD 83)

Altitude: 6155.46

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

Location:
In BERNALILLO county, NM View Original Datasheet
Designation:
NM BER 9
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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The bridge has been redone, probably when old route 66 turned into I-40

Documented History (by the NGS)

01/01/1934 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1934 14.1 MI E FROM ALBUQUERQUE. 14.1 EAST ON US HWY NO. 366, FROM STATION (15.4 MI WEST OF BARTON) IN THE SOUTHWEST PIER OF BRIDGE NO. 1140, 12 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY, AND 5 FEET BELOW THE ROAD LEVEL.
01/01/1954 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1954 MARK NOT FOUND.

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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