It was one of the 28 companies absorbed into the American Bridge Company in 1900.
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Valley Road Bridge, Stewartstown Railroad, Stewartstown RR tracks over Valley Rd., Hopewell Township Stewartstown, PA (Keystone Bridge Co.), NRHP-listed
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John Baird had also been involved in the construction of the Eads Bridge in St. Louis and the Cairo bridge in Memphis, and had been employed by the McCann Construction Company, the Keystone Bridge Company and American Bridge Company.