Got a note that the local DOT had disturbed this cap set in the abt. of a bridge on a state highway. They were wondering if it was mine (US Forest Service), it's not.
Checked NGS nothing - no US army corps info either
All federal land around the bridge.
Any ideas?
Possibly set by a contracted surveyor working for one of the relevant agencies. It had to be installed after the abutment was constructed. That gives an earliest possible date to start the research.
What does it mark? Is it a quarter corner? Or is it simply monument number 4?
Possession is 0.9 of the law and it looks like you have it.
Federal Highway Administraion?
Doesn't mark any boundary etc. so it is just monument #4
> Any ideas?
I recently saw some just like this in the Pensacola Dam (Grand Lake, OK), numbered in a similar manner. They were in the top of dam sidewalk every 1000' +/-. I'm pretty sure they are monitoring points.
In my county at least. In times past, it was standard practice to set a brass cap in the structural concrete during the construction of a new bridge. I'm not sure where that practice originated from. The idea being that you would transfer your project control over to the new bridge for future work.
It looks like it has been re punched several times so it is probably not random control, it must mark the limits or angle of a project, parcel, etc. I would look for plans in that area, land, highway, bridge layout, etc.
T.W.
You could try Craiglist Missed Connections.
'Me, Brass Cap No.4. I was trapped in a bridge until someone set me free and now I can't find my way home. Can somebody tell me whose my Daddy?'
> You could try Craiglist Missed Connections.
>
> 'Me, Brass Cap No.4. I was trapped in a bridge until someone set me free and now I can't find my way home. Can somebody tell me whose my Daddy?'
You might be closer than you think.
For years our DOT set these in every RCB parpet or bridge abutment then transfered an elevation to it from the project control. Sometime in the late 90s many (not all) the monuments continued to be set, but often (~50/50) the elevation ceased to be determined.
Go figure.
Steve
NDOR sets two aluminum caps on every bridge one at each abutment. It is up to the project surveyor to set elevations on them. Sometimes it happens...a lot of times it doesn't.
Not un-common
