Where's the corner, and what's it look like?

Can't see it real well on the phone here but, it looks like it's in the middle of the hwy. Does the legal description show an easement of sorts? It even states 0.9xx acres in ROW,right of way. The part that concerns me is the 2 (found 1/2" iron rods) on the right of way. It's almost like this surveyor didn't take into consideration the right of way. Can't say I've ever seen anything quite like that before.

I'll try to dig that survey out and see if I can get a better picture of it, but yes, the true property line is about the center of the pavement for both the 17.4 ac and the 24 ac to the East of it. A case of the property was originally bought before the road existed. It was originally a log tram road with all the property here abouts belonging to a big timber company, then got deeded to the National Forest in a property in lieu of back taxes swap , which is why there's a notation on the far left that is partially visible..says "Property of The United States of America". The 42.6 ac property across the tram road evidently gave 1/2 the easement and our property gave the other 1/2, but of course that was many years before my father bought it. I very much remember, when I was about 15, measuring (I think) 24' from the center of the road, and thru the ditch south to determine how close to the road we could build the northmost fence. That's the distance the State told my father IIRC. There isn't much ditch area there and the drive into that place from pavement edge to the gate isn't long enough but for one pickup truck.
Here, brother & I legally 'owned' the property that is in the middle of the road and the ditch, but don't have to pay property taxes for it..can never use it for my own use either. Both properties have been sold since that survey was done. On the East end of the 24 ac but not shown, that steel rod for the NE corner is actually brass & is embedded in the concrete of a bridge approach over the San Jacinto river. It's also recorded as the nearest "known elevation" marker.

(notice the names of the folks that own the property across the highway?)
They may not own it any more. That's the property where DEA/TxDPS found, cut, then helo'd 14,000lbs of marijuana onto my property a few years ago so they could load it and haul it off. If they tied that pot to those arabs, that property now belongs to the county or state.

Normally, in situations like that, a formal deed would have been filed to turn over the lands in the ROW to the state. A new legal description of the remaining property would be given and it's deed ammended to account for it. The 2 found 1/2" iron rods at the ROW should then become the north boundary of said property. Anyways, that's the way it would of been handled here, not knowing anything about Texas land laws I don't know if yours is a normal situation there.

I bet he power company is not state owned 3Lt.

Probably got a good section corner there.

There's one of those up at the bridge, which is farther to the east out of the view on that plat. 
Supposed to be a permanent cement & steel monument at the NE corner of the 40.26 parcel across the highway, but last survey done,  they never could find it. 

This property is all part of what is known as the William Dobie Survey which was done in the early 1800s, just prior to the Texas revolution of 1835/1836. 

This is legally referred to as  A93 of that survey.  

W. Dobie was granted a 1/4 league + a 'labor of land' in what is now SE Harris County and a full league + a labor of land in what is now this county. A league is 25 million sq varas which =4,428 acres.  A labor of land was 177 acres. 

I may later try to dig out one of the old surveys I have of this place that is in Varas. 

www.caldwellcad.org/data/_uploaded/file/taxinfo/Texas%20Land%20Measurments%20Guide.pdf

I just opened the link. That's a pretty good conversion of older survey measurements.