McLouth Steel: the Trenton mill that cast steel the new way

For about half a century, a mile of Trenton’s Detroit River waterfront glowed with molten steel. McLouth Steel bought that riverfront in 1948 — with a $25 million loan from General Motors helping to fund the build — and poured its first ingots the next year. By 1954 the Trenton works was a fully integrated mill, making iron and steel from the raw materials on up.

What set McLouth apart was how it cast. Most mills of the era poured steel into molds to make ingots, then reheated and rolled them. McLouth pushed hard on continuous casting, where molten steel is shaped into a solid strand in one unbroken run — and the Trenton plant became the first in North America to cast all of its steel that way. It was a genuine leap in how American steel got made.

The mill was the city’s anchor. By the early 1960s McLouth employed several thousand people in Trenton, and the plant’s taxes covered something like 40 percent of the city’s budget. When a town leans that heavily on one employer, everything depends on that one fire staying lit.

It went out in 1995, when McLouth filed for bankruptcy and the Trenton works shut down for good. The 273-acre site sat as a rusting hulk for years. Wayne County eventually foreclosed on it, the buildings were leveled by 2020, and the land became a Superfund cleanup. Drive River Road today and there’s open ground where the furnaces stood — a long stretch of quiet riverbank still figuring out what comes after steel.