Bridge collapsed

If you really want to know, subscribe (on Amazon Prime) or find on youtube to Great Courses, and tune into Epic Engineering Failures and the Lessons they Teach. This course is taught by Dr. Stephen Ressler who is a PE, PhD (Civil Eng), Dist. M. ASCE, F. ASEE and professor emeritus for the US Military Academy, West Point. He retired from USA Corps of Eng as a Brigadier General after 34 years of service. I watched the entire series and it is fascinating. My wife is an RN, and she also watched it. It's not just about bridges, but if you watch this you will understand the evolution of bridges and why they fall down.

Crews opened a second temporary channel on Tuesday allowing a limited amount of marine traffic to bypass the wreckage of Baltimore's collapsed Francis Scott Key Bridge, which had blocked the vital port's main shipping channel since its destruction one week ago. Work is ongoing to open a third channel that will allow larger vessels to pass through the bottleneck, officials announced at a news conference Tuesday afternoon. The channels are primarily open primarily to vessels that are helping with the cleanup effort, along with some barges and tugs that have been stuck in the Port of Baltimore. A tugboat pushing a fuel barge was the first vessel to use an alternate channel late Monday. It was supplying jet fuel to Delaware's Dover Air Force Base.


The FBI has opened a criminal investigation focusing on the massive container ship that brought down the Francis Scott Key Bridge in Baltimore last month — a probe that will look at least in part at whether the crew left the port knowing the vessel had serious systems problems, according to two U.S. officials familiar with the matter.