Organized Chaos

Thanks for the info Buck! There is a bridge a few miles north of this marker. And state Hwy a few hundred yards or so north of it. So possibly it was placed here at the construction times of one of these. I am guessing it has something 2 do with the bridge construction. I worked in road construction for 10 years and have never saw a marker like this one. I have seen several benchmarks placed on older bridges. It also got me to wondering how common it is for a disk like this from one city and state to be placed in another city and state? This one is obviously from Memphis, TN and it is in a small town in AR.

I found this disk while searching for EH1385. It has the same lat/lon as the one I was looking for but does not look like the others I have found. ( Link to EH1380 that I found ) the ones I have found have the correct "Designation" stamped on them, where this one does not have the stamp T 115 like it should. I can't seem to find any info on this disk. And was wondering if any of you could help me out and tell me where I can get info on this disk? It seems to be close to the measurements described by the Coast & Geodetic survey. I have not taken a tape measure out and did exact measurements on it yet. I was just wondering if this could the benchmark, or it was replaced by this one?