Baltimore Assembly (properly named Broening Highway General Motors Plant) was a General Motors factory in Baltimore, Maryland. The plant opened in 1935 to produce Chevrolets and closed on May 13, 2005. It was a two-level plant located in the Canton Industrial Center to the east of the Inner Harbor, to the west of Dundalk, and south of Brewers Hill in Baltimore.Early in 1942, car and truck production was interrupted when the plant was converted to wartime activities.