Survey Disk, CA/T 658 - Boston, MA
Posted by: NorStar
N 42° 21.901 W 071° 04.248
19T E 329481 N 4692381
This small brass disk is located on the edge of a sidewalk and parking lot near the Charlesbank Park along the Charles River.
Waymark Code: WMCNWZ
Location: Massachusetts, United States
Date Posted: 09/26/2011
Views: 3
In Boston, by a parking lot next to an old municipal pool is this survey disk mounted in the pavement at sidewalk level.
To get to the mark, either follow the path along the Charles River from west to east through Charlesbank Park, then at the entrance from the parking lot walk left along the iron fence to the mark about 100 ft from the entrance way - or, from the pedestrian bridge over Storrow Blvd near Blossom Street walk to the right of the old pool to the parking lot then walk along the iron fence at the river to the mark just to the left.
The mark is horizontally mounted in the stone sidewalk and is about 5 ft from the fence, and less than a foot from the edge to the parking lot. It is close enough that a car with a long overhang could obscur the disk from above.
The top of the mark is embedded, "CA/T 658," and there is a depression in the center.
CA/T stands for "Central Artery Tunnel", which stands for Central Artery Tunnel Authority, which was the agency that placed the mount - now rolled into the Massachusetts Department of Transportation (MassDOT).
The disk is in good condition.
Condition: Mark found in good condition
Designation: CA/T 658
Benchmark Agency: other (not included below)
Benchmark Agency (if other): Central Artery Tunnel Authority
Monumentation type: Disk (unspecified type)
County: Suffolk
USGS 7.5' Topographic Quadrangle Name (optional): Boston North
Special category (optional): Not listed
Find type: Found by luck/skill/knowledge
Monumentation type (if other): Not listed
Special Category (if other): Not listed
Web address of this benchmark's datasheet (optional): Not listed
NGS PID: Not listed
Local database's URL (optional): Not listed
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Visit Instructions:
- A closeup photo of the mark taken by you is required.
- A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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