The Union Iron Works (first known as Carondelet Marine Railway Company and later as Union Marine Works) was a shipbuilding and engineering firm in Carondelet, St. Louis, Missouri, United States.
It sat where Marceau Street, off South Broadway, met the Mississippi River.
[1] In 1861, riverboat salvager and engineer James Eads leased the yard and used it to build ironclads for the Union Navy during the American Civil War.
In 1869 and 1870, facilities of the Union Iron Works were used by William Nelson and Co. to fabricate the caissons used to build Eads Bridge.
City-class gunboats constructed at Union Iron Works City-class boats built by James Eads & Co. at the Mound City Marine Railway and Shipyard Milwaukee-class monitors constructed at Union Iron Works Milwaukee-class monitors constructed by others under subcontract to Union Iron Works Neosho-class monitors This United States manufacturing company–related article is a stub.