Looks like these roads were submerged when the dam was built and the reservoir filled. The original road can be seen to the SW.
Looks like these roads were submerged when the dam was built and the reservoir filled. The original road can be seen to the SW. Roads - Misc By: kjfitz
Roads - Misc 
This is the Stillhouse Hollow Reservoir/Lake. It was impounded by the US Army Corps of Engineers in 1968.
See: http://www.tpwd.state.tx.us/fishboat/fish/recreational/lakes/stillhouse_hollow/
It would be interesting to find pre-1968 maps of this area to determine what roads these were...