approximately 4,000 lbs.Click to see full answer. Keeping this in view, how much do concrete barrier blocks weigh?Full Barrier Block: 2’x2’x6′ | 1 yard of concrete weighs approximately 4,000 pounds. Half Barrier Block: 2’x2’x3′ | 1/2 yard of concrete weighs approximately 2,000 pounds.Subsequently, question is, how long is a concrete barrier? minimum length of each barrier section will be 10 feet. It is common for DOTs to ask for lengths of 20 feet or even 30 feet. Likewise, people ask, how much does a 12 jersey barrier weight? About 600lb per foot according to this: Jersey Barrier is very heavy, something like 600 lbs. per linear foot of barrier.What are concrete barriers called?A Jersey barrier, or Jersey wall, is a modular concrete or plastic barrier employed to separate lanes of traffic. It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.