Understanding I-5 in Seattle...
To understand why the freeway is cracking and breaking apart, engineers must head into the field in the middle of the night and take samples or the concrete.
For each crack, they're trying to figure out if it's deep and is generated by a fundamental problem with the ground or whether it's superficial and comes from too much traffic on top. Understanding this is key to fixing the freeway the right way, a way that will last for another 20 years.
Understanding I-5 in Seattle...
To understand why the freeway is cracking and breaking apart, engineers must head into the field in the middle of the night and take samples or the concrete.
For each crack, they're trying to figure out if it's deep and is generated by a fundamental problem with the ground or whether it's superficial and comes from too much traffic on top. Understanding this is key to fixing the freeway the right way, a way that will last for another 20 years.