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Details for Benchmark: OB0169

N 43° 54.667 W 069° 48.717 (NAD 83)

Altitude: 11.84

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

Location:
In SAGADAHOC county, ME View Original Datasheet
Designation:
B 17
Marker Type:
bench mark disk
Setting:
abutments and piers of large bridges
Stability:
Probably hold position/elevation well.

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Found! It is located near the incomplete end of the Bath Bridge West Tower benchmark.

we thought it was the briges but friends said it was somthing on the old bridge. you have to go on the brige to see the marker but we went under the brige.

Found with Harry and Andy

Found it.®

Found by description. The old vehicular bridge is being torn down. The railroad bridge raimans. The designation on the disk is illegible.

[Photos:]
photoOB0169 Bath Sagadahoc ME Close Up
photoOB0169 Bath Sagadahoc ME View East
N 43° 54.674 W 069° 48.739

found it with findinfishers. The old vehicle bridge has been removed and only the train bridge remains. The coordinates where we found the disk are different from those given on this page. we found it at N 43 54.674, w 069 48.739.

[last edit: 7/2/2003 9:30:19 AM PST]

[last edit: 7/2/2003 9:32:04 AM PST]

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
01/01/1963 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1963 IN BATH. AT BATH, SAGADAHOC COUNTY, ON THE MAINE CENTRAL RAILROAD, NEAR THE STATION, 350 FEET EAST OF THE EAST END OF THE BAGGAGE ROOM, AT THE WEST END OF THE RAILROAD BRIDGE OVER KENNEBEC RIVER, IN THE TOP OF THE SOUTHWEST CORNER OF THE FOUNDATION OF A LARGE CONCRETE COLUMN, 10 FEET SOUTH OF THE CENTER LINE OF THE TRACK, AND ABOUT 1 FOOT LOWER THAN THE BASE OF THE RAIL. A STANDARD DISK, STAMPED B 17 1933.
01/01/1978 by LOCSUR (GOOD)
RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1978 RECOVERED IN GOOD CONDITION.
04/04/1991 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1991 (AMW) RECOVERED IN GOOD CONDITION.
07/26/1992 by DOD (GOOD)
RECOVERY NOTE BY US DEPARTMENT OF DEFENSE 1992 (AH) RECOVERED AS DESCRIBED.

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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