Core samples....
It’s how they measure how much the road is wearing.
It’s Texas.....They drill everything there ;)
Someone had to count them all.
They did that here also after the flood to see how far it was down to bedrock. They dug down to bedrock and filled it with concrete, over 77,000 yards of it.
Shhhhhhhh.....
Illegal alien detectors.
They are planting secret transmitters that the CIA can use to electronically take control of your vehicle and send you crashing into a guard rail when they want you to have an “accidental” death.
You had better trade your car in for something that is immune to their remote control, like a 72 Gremlin, ASAP!
As some have said it could be to check road wear.
I have also seen this done in places to check new asphalt mixtures to test the wear of the new mixtures.
Are the drilled/filled holes all in the wear patterns of the roadway?
If so that is probably the reason.
NC did a lot of testing like that before they put millions of $$ into their highway budget to enlarge and resurface their highways.
I commute the SRT & GWB every day. Where have you seen these?
This is how they hack into your car to kill you and make it look accidental.
The holes are filled with gun powder which will go BOOM anytime a liberal from another state tries to move into Texas.
IEDs.
Core samples are taken for strength
tests. If the cement separates from
the aggregate, the concrete needs
replacement.
It sounds like consolidation grouting.
There is a lot of limestone in the Dallas area and limestone is susceptible to solution voids, that is cavities caused by water, the grouting fills the voids.
It’s a test system to wireless charge Tesla cars while they drive. They can recharge for free in their own dedicated lanes. This will prevent Global Warming. /S
You can check all current Texas highway projects at Texas DOT Project Tracker:
https://www.txdot.gov/inside-txdot/projects/project-tracker.html
Are the holes near seams, with a hole on each side of the seam? I have seen them do this for miles. There is some kind of joiner that sits in there that locks the different blocks together. I thought that was just an upper-Midwest winter thing. I think they call it joint stitching.
You could have just called the hwy dept