. Bulletin - United States National Museum. Science. Figure 6.—The plate-girder bridge completed in 1847 by Millholland for the Baltimore and Susquehanna Railroad. (From Engineering News, October 20, 1888.) track bridge was fabricated from Jj-inch boiler iron. It was 6 feet deep by 54 feet long, weighing 14 tons. Built at the Bolton shops in the winter of 1846 and placed in service 19 miles north of Baltimore in April 1847, it was the first such bridge in America—and probably the first of its kind in the world. In 1864 it was rebuilt for a double track and continued in use for another 18 years
. Bulletin - United States National Museum. Science. Figure 6.—The plate-girder bridge completed in 1847 by Millholland for the Baltimore and Susquehanna Railroad. (From Engineering News, October 20, 1888.) track bridge was fabricated from Jj-inch boiler iron. It was 6 feet deep by 54 feet long, weighing 14 tons. Built at the Bolton shops in the winter of 1846 and placed in service 19 miles north of Baltimore in April 1847, it was the first such bridge in America—and probably the first of its kind in the world. In 1864 it was rebuilt for a double track and continued in use for another 18 years '' (see Appendix I). In 1848 Millholland was in the prime of life, a recognized mechanic and respected engineer whose reputation had outgrown his position with the strug- " Engineering News (October 20, 1888), vol. 20, p. 305, con- tains a drawing and reproduces a letter (May 1, 1849) from Millholland to Herman Haupt describing the bridge. See also C. W. CoNDiT, American Building Art: the I9lh Century (New York: University Press, I960), pp. 106-107 and 301. gling Baltimore and Susquehanna. Accordingly, when in August 1848 the Philadelphia and Reading Railroad offered him the position of master machinist, he readily accepted.'- The Philadelphia and Reading was one of the best engineered railroads in the 19th-centtu-y United States. In contrast to most American roads, it \vas very well constructed, with generous curves, light grades, and heavy T rails. Its capitalized cost came to SI80,000 per mile, more than six times that of most other American railroads. Running from Phila- '2 Millholland gives the date of his employment with the Reading in a letter (November 9, 1860) to C. T. Parry of the Baldwin Locomotive \Vorks. This letter is preserved by the Historical Society of Pennsylvania. PAPER 69: JAMES MILLHOLLAND AND EARLY ENGINEERING. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabil
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