How Many .50 BMG To Penetrate A Concrete Highway Barrier?

The concrete barrier shrugged off the pistol velocity rounds (i.e., handguns and a subsonic .300 BLK), while rifle rounds made divots. But using what was described as .50 BMG silver tip bullets (presumably the armor-piercing incendiary rounds) it only took 3 rounds placed fairly close together to pierce through the barrier. Because these are steel reinforced, the concrete did not completely break apart as we see with tests against concrete blocks,albeit there was also significant cracking and loss of material on the front face. 

 

 VIDEO: "Can a Concrete Highway Barrier Stop a 50 Cal Sniper Rifle?"
Yee Yee Life (18 min.)