OPEN THOSE LANES!!!
LOL!!
That would require the locals to call the state for permission, and DOT, LBI, and BTAF requirements would have to be met. An Environmental Impact Statement would be required to assess the impact of the explosion on the endangered snotless swamp rat or somesuch...
Would take about 3 weeks to get it together, 400 man-hours of paperwork, government OK's, and then you'd have to pad the pockets of several people to actually get it done....
This IS Louisiana we're talking about...
Those barriers are significantly stronger than they look. Most explosives wouldn't even faze them.