JW1711 ***********************************************************************
JW1711  DESIGNATION -  SHA 217
JW1711  PID         -  JW1711
JW1711  STATE/COUNTY-  MD/GARRETT
JW1711  USGS QUAD   -  GRANTSVILLE (1994)
JW1711
JW1711                         *CURRENT SURVEY CONTROL
JW1711  ___________________________________________________________________
JW1711* NAD 83(1986)-  39 41 38.     (N)    079 10 14.     (W)     SCALED
JW1711* NAVD 88     -       698.542  (meters)    2291.80   (feet)  ADJUSTED
JW1711  ___________________________________________________________________
JW1711  GEOID HEIGHT-         -31.52  (meters)                     GEOID99
JW1711  DYNAMIC HT  -         698.094 (meters)    2290.33  (feet)  COMP
JW1711  MODELED GRAV-     979,961.9   (mgal)                       NAVD 88
JW1711
JW1711  VERT ORDER  -  SECOND    CLASS I
JW1711
JW1711.The horizontal coordinates were scaled from a topographic map and have
JW1711.an estimated accuracy of +/- 6 seconds.
JW1711
JW1711.The orthometric height was determined by differential leveling
JW1711.and adjusted by the National Geodetic Survey in April 1995.
JW1711
JW1711.The geoid height was determined by GEOID99.
JW1711
JW1711.The dynamic height is computed by dividing the NAVD 88
JW1711.geopotential number by the normal gravity value computed on the
JW1711.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
JW1711.degrees latitude (g = 980.6199 gals.).
JW1711
JW1711.The modeled gravity was interpolated from observed gravity values.
JW1711
JW1711;                    North         East    Units  Estimated Accuracy
JW1711;SPC MD       -   227,260.      213,830.      MT  (+/- 180 meters Scaled)
JW1711
JW1711                          SUPERSEDED SURVEY CONTROL
JW1711
JW1711.No superseded survey control is available for this station.
JW1711
JW1711_MARKER: DD = SURVEY DISK
JW1711_SETTING: 38 = BRIDGE ABUTMENT
JW1711_STAMPING: SHA 217 1992
JW1711_MAGNETIC: O = OTHER; SEE DESCRIPTION
JW1711_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
JW1711
JW1711  HISTORY     - Date     Condition        Recov. By
JW1711  HISTORY     - 1992     MONUMENTED       MDSHA
JW1711
JW1711                          STATION DESCRIPTION
JW1711
JW1711''DESCRIBED BY MARYLAND DOT HIGHWAY ADMINISTRATION 1992
JW1711''THE MARKER IS LOCATED ABOUT 4.1 MI (6.6 KM) EAST OF KEYSERS RIDGE,
JW1711''0.8 MI (1.3 KM) WEST-SOUTHWEST OF GRANTSVILLE, AND 9.1 MI (14.6 KM)
JW1711''EAST-NORTHEAST OF ACCIDENT.  IT IS LOCATED ON INTERSTATE HIGHWAY 68
JW1711''RIGHT OF WAY.  TO REACH FROM A POINT WHERE STATE HIGHWAY 495 CROSSES
JW1711''OVER INTERSTATE HIGHWAY 68 NEAR GRANTSVILLE, GO WEST ON INTERSTATE
JW1711''HIGHWAY 68 FOR 0.6 MI (1.0 KM) TO THE MARKER ON THE RIGHT.  THE POINT
JW1711''IS MARKED WITH A MARYLAND STATE HIGHWAY ADMINISTRATION DISK, CEMENTED
JW1711''IN THE NORTHEAST END OF A BRIDGE BACKWALL WHICH IS PART OF THE MOST
JW1711''EASTERLY ABUTMENT FOR A BRIDGE NUMBERED 11050 FOR THE WESTBOUND LANE
JW1711''OF INTERSTATE HIGHWAY 68 WHERE IT CROSSES OVER SHADE HOLLOW ROAD.  IT
JW1711''IS 0.8 FT (24.4 CM) SOUTHEAST OF THE MOST EASTERLY BRIDGE EXPANSION
JW1711''JOINT, 2.2 FT (0.7 M) SOUTHWEST OF THE SOUTHWEST EDGE OF THE MOST
JW1711''NORTHERLY BRIDGE PARAPET WALL, 10.0 FT (3.0 M) NORTHWEST OF THE
JW1711''SOUTHEAST END OF THE MOST NORTHERLY BRIDGE PARAPET WALL, AND 20.0 FT
JW1711''(6.1 M) NORTHEAST OF THE CENTER OF WESTBOUND LANE OF INTERSTATE
JW1711''HIGHWAY 68.  IT IS ABOUT THE SAME ELEVATION AS THE SURFACE OF THE
JW1711''HIGHWAY.