The Potomac River is pretty shallow where the Key Bridge crosses between the Georgetown neighborhood of Washington, DC, and Rosslyn neighborhood of Arlington County, Virginia. The largest facilities upstream of it are boathouses, where one may put in a canoe or perhaps a racing shell.
The other key bridge is not in Baltimore.
Yeah the original cnbc article was talking about the Potomac which isn’t near Baltimore, so I wanted to make sure no one else was as confused as I had been.