Thomas William Moseley

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Thomas William Henry Harrison Moseley (November 28, 1813 March 10, 1880) was a builder and designer of wrought-iron arch bridges. He is best known for his "Wrought-Iron Lattice Girder Bridge" patent of August 30, 1870. The only known surviving example of this type of bridge structure is the Hares Hill Road Bridge located in Chester County, Pennsylvania. [1]

Hares Hill Road Bridge

The Hares Hill Road Bridge is a single-span, wrought iron, bowstring-shaped lattice girder bridge. It was built in 1869 by Moseley Iron Bridge and Roof Company and is the only known surviving example of this kind. The bridge spans French Creek, a Pennsylvania Scenic River. The structure has a current load posting of 7 tons.

Chester County, Pennsylvania County in Pennsylvania, United States

Chester County (Chesco) is a county in the U.S. state of Pennsylvania. As of the 2010 census, the population was 498,886, increasing by 4.1% to a census-estimated 519,293 residents as of 2017. The county seat is West Chester. Chester County was one of the three original Pennsylvania counties created by William Penn in 1682. It was named for Chester, England.



Thomas W.H. Moseley was born near Mt. Sterling, Kentucky on November 28, 1813. He died in Scranton, Pennsylvania on March 10, 1880. He was referred to at times as "Gen. Moseley" because of his time as state adjutant-general in Ohio in the 1840s to early 1850s. He got started in business in Cincinnati, Ohio in the 1850s, which is when Zenas King was on board. By 1861, T.W.H Moseley had made his move to Boston, Massachusetts, and Zenas King started his own company in Cleveland, Ohio. By the early 1870s Thomas Moseley was living in Pennsylvania; Philadelphia first, then in Scranton. [2]

Scranton, Pennsylvania City in Pennsylvania, United States of America

Scranton is the sixth-largest city in the Commonwealth of Pennsylvania. It is the county seat and largest city of Lackawanna County in Northeastern Pennsylvania's Wyoming Valley and hosts a federal court building for the United States District Court for the Middle District of Pennsylvania. With a population of 77,291, it is the largest city in the Scranton–Wilkes-Barre–Hazleton, PA Metropolitan Statistical Area, which has a population of about 570,000. The city is conventionally divided into 7 districts: North Scranton, Southside, Westside, East Scranton, Central City, Minooka, and Green Ridge, though these areas do not have legal status.

Zenas King He started his career of building bridges in 1858 and moved from Cincinnati to Cleveland, Ohio around 1861. He established a bridge building works on Watson Street in Cleveland in 1865. King founded the King Iron Bridge & Manufacturing Company in 1871. As early as 1878 it was manufacturing many types of truss, combination, and wooden bridges and by the 1880s it was the largest highway bridge works in the United States. Production moved from Watson Street to larger facilities on Ruskin Avenue in 1888. The company changed its name to the King Bridge Company after the death of Zenas King. Many of the company's bridges were used during America's westward expansion in the late 19th and early 20th centuries and some of these bridges are still standing today.


Patent No Patent Date Inventor Name /City,State Description /Significance Example /Type Ref. Link
16572 February 3, 1857 Thomas Moseley /Boston, Massachusetts Outlines distinctive details in remaining Moseley bowstring truss bridges. Hares Hill Bridge
59054 October 23, 1866 Thomas Moseley /Boston, Massachusetts Outlines distinctive details in remaining Moseley bowstring truss bridges. Hares Hill Bridge
103765 May 31, 1870 Thomas Moseley /Boston, Massachusetts Outlines distinctive details in remaining Moseley bowstring truss bridges. Hares Hill Bridge
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See also

Moseley Wrought Iron Arch Bridge

The Moseley Wrought Iron Arch Bridge, also known as the Upper Pacific Mills Bridge, is a historic, riveted, wrought iron bowstring arch bridge now located on the campus of Merrimack College in North Andover, Massachusetts. It was added to the National Historic Civil Engineering Landmark list in 1998 and was originally part of the North Canal Historic District on the National Register of Historic Place. It is the oldest iron bridge in Massachusetts, and one of the oldest iron bridges in the United States. It was the first bridge in the United States to use riveted wrought iron plates for the triangular-shaped top chord.

The Moseley Iron Bridge Company was founded by Thomas William Moseley in Cincinnati, Ohio around 1858 and existed until 1879. Moseley was an engineer, bridge builder, and designer. John Paul Verree used T.W.H. Moseley's designs for his bridge manufacturing business in Philadelphia, Pennsylvania.

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  1. "Hares Hill Road Bridge, Spanning French Creek, Kimberton, Chester County, PA". Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey.
  2. Biography information provided by Robert M. Jackson