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Interstate Bridge Disk Question..


Readymixer

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I've logged 2 markers on bridges of major highways. In both cases I was able to approach the benchmark from below the bridge. I've passed up on several more interstate bridges because the only way for me to approach would be along the highway. I'd rather not find the disk than risk an accident by stopping and walking along the highway.

 

Now as to the original question in this thread, they are most likely survey disks for the state DOT or some such agency. State agencies like that tend to have a network of survey markers that may or may not be part of the NGS database. You most likely found those markers.

 

I'm not lost!

I just don't know where I am.

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