St. Louis does a horrible job of promoting its pivotal role in American history. How many people know that the ironclads the Union used to conquer the Mississippi River were built in none other than Carondelet by James Eads, the builder of the famous bridge that now bears his name? Or that his stately mansion once stood on Compton and Eads Avenues before being demolished? I looked further into the great boatyards where Union victory began, and found what seems to be the descendent of Eads’s ironclad shipyards in the Sanborn Map below from several decades after the Civil War. It’s in the right place: just north of the confluence of the Des Peres River and the Mississippi.
The site is now the former Carondelet Coke, which in of itself was a landmark in the city. I suspect the shipyards were torn down for the construction of the coke factory. Nothing remains of this critical moment in St. Louis’s history.